17474 lines
		
	
	
		
			421 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			17474 lines
		
	
	
		
			421 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
***************   Case 1   ***************
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drop database if exists subquery_db;
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{
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  "drop_database_arg":"tenant_id",
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  "database_name":"subquery_db",
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  "if_exist":true,
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  "to_recyclebin":false
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}
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***************   Case 2   ***************
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create database subquery_db;
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{
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  "create_database_arg":"database_schema",
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  "database_id":-1,
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  "schema_version":1,
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  "database_name":"subquery_db",
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  "replica_num":0,
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  "zone_list": [
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  ],
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  "primary_zone":"",
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  "charset_type":2,
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  "collation_type":"utf8mb4_general_ci",
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  "name_case_mode":-1,
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  "comment":"",
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  "read_only":false,
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  "default_tablegroup_id":-1,
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  "default_tablegroup_name":"",
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  "in_recyclebin":false,
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  "primary_zone_array": [
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  ]
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}
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***************   Case 3   ***************
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use subquery_db;
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{
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  "stmt_type":97
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}
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***************   Case 4   ***************
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create table t1(c1 int primary key, c2 int);
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{"ObTableStmt":{"partition_fun_expr":[], "range_values_exprs":[], "list_values_exprs":[], "index_partition_resolve_results":[], "part_type":8}, "stmt_type":20, "create_table_arg":{"if_not_exist":false, "schema":{"simple_table_schema":{"tenant_id":1, "database_id":18446744073709551615, "tablegroup_id":1099511627777, "table_id":18446744073709551615, "table_name":"t1", "replica_num":0, "previous_locality_str":"", "min_partition_id":0, "session_id":0, "index_type":0, "table_type":3, "data_table_id":0, "name_casemode":-1, "schema_version":0, "part_level":0, "part_option":{"part_func_type":0, "part_func_expr":"", "part_num":1, "partition_cnt_within_partition_table":-1, "max_used_part_id":0}, "sub_part_option":{"part_func_type":0, "part_func_expr":"", "part_num":1, "partition_cnt_within_partition_table":-1, "max_used_part_id":-1}, "locality_str":"", "zone_list":[], "primary_zone":"", "part_num":0, "subpart_num":0, "partition_num":1, "subpartition_num":0, "partition_array":[{"BasePartition":{"tenant_id":18446744073709551615, "table_id":18446744073709551615, "part_id":0, "name":"p0", "high_bound_val":, "list_row_values":[], "part_idx":0}, "mapping_pg_part_id":-1}], "subpartition_array":null, "index_status":1, "binding":false, "duplicate_scope":0}, "max_used_column_id":17, "max_used_constraint_id":0, "sess_active_time":0, "rowkey_column_num":1, "index_column_num":0, "rowkey_split_pos":0, "block_size":16384, "is_use_bloomfilter":false, "progressive_merge_num":0, "tablet_size":134217728, "pctfree":10, "load_type":0, "index_using_type":0, "def_type":1, "charset_type":2, "collation_type":45, "create_mem_version":0, "index_status":1, "partition_status":0, "code_version":1, "last_modified_frozen_version":0, "comment":"", "pk_comment":"", "create_host":"", "zone_replica_attr_array":[], "region_replica_num_array":[], "tablegroup_name":"", "compress_func_name":"zstd_1.0", "row_store_type":1, "store_format":3, "expire_info":"", "view_schema":{"view_definition":"", "check_option":"none", "is_updatable":"false", "is_materialized":"false"}, "autoinc_column_id":0, "auto_increment":1, "read_only":false, "primary_zone_array":[], "index_tid_array":[], "mv_tid_array":[], "aux_vp_tid_array":[], "base_table_ids":[], "rowkey_info":{"columns":[{"length":0, "column_id":16, "type":{"type":"INT", "collation":"binary", "coercibility":"NUMERIC"}, "order":0, "fulltext_flag":false}], "capacity":1}, "partition_key_info":{"columns":null, "capacity":0}, "aux_vp_tid_array":[]}, "index_arg_list":[], "constraint_list":[], "db_name":"subquery_db", "last_replay_log_id":0, "foreign_key_arg_list":[], "vertical_partition_arg_list":[]}, "index_arg_list":[]}
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***************   Case 5   ***************
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create table t2(c1 int primary key, c2 int, c3 varchar(32));
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{"ObTableStmt":{"partition_fun_expr":[], "range_values_exprs":[], "list_values_exprs":[], "index_partition_resolve_results":[], "part_type":8}, "stmt_type":20, "create_table_arg":{"if_not_exist":false, "schema":{"simple_table_schema":{"tenant_id":1, "database_id":18446744073709551615, "tablegroup_id":1099511627777, "table_id":18446744073709551615, "table_name":"t2", "replica_num":0, "previous_locality_str":"", "min_partition_id":0, "session_id":0, "index_type":0, "table_type":3, "data_table_id":0, "name_casemode":-1, "schema_version":0, "part_level":0, "part_option":{"part_func_type":0, "part_func_expr":"", "part_num":1, "partition_cnt_within_partition_table":-1, "max_used_part_id":0}, "sub_part_option":{"part_func_type":0, "part_func_expr":"", "part_num":1, "partition_cnt_within_partition_table":-1, "max_used_part_id":-1}, "locality_str":"", "zone_list":[], "primary_zone":"", "part_num":0, "subpart_num":0, "partition_num":1, "subpartition_num":0, "partition_array":[{"BasePartition":{"tenant_id":18446744073709551615, "table_id":18446744073709551615, "part_id":0, "name":"p0", "high_bound_val":, "list_row_values":[], "part_idx":0}, "mapping_pg_part_id":-1}], "subpartition_array":null, "index_status":1, "binding":false, "duplicate_scope":0}, "max_used_column_id":18, "max_used_constraint_id":0, "sess_active_time":0, "rowkey_column_num":1, "index_column_num":0, "rowkey_split_pos":0, "block_size":16384, "is_use_bloomfilter":false, "progressive_merge_num":0, "tablet_size":134217728, "pctfree":10, "load_type":0, "index_using_type":0, "def_type":1, "charset_type":2, "collation_type":45, "create_mem_version":0, "index_status":1, "partition_status":0, "code_version":1, "last_modified_frozen_version":0, "comment":"", "pk_comment":"", "create_host":"", "zone_replica_attr_array":[], "region_replica_num_array":[], "tablegroup_name":"", "compress_func_name":"zstd_1.0", "row_store_type":1, "store_format":3, "expire_info":"", "view_schema":{"view_definition":"", "check_option":"none", "is_updatable":"false", "is_materialized":"false"}, "autoinc_column_id":0, "auto_increment":1, "read_only":false, "primary_zone_array":[], "index_tid_array":[], "mv_tid_array":[], "aux_vp_tid_array":[], "base_table_ids":[], "rowkey_info":{"columns":[{"length":0, "column_id":16, "type":{"type":"INT", "collation":"binary", "coercibility":"NUMERIC"}, "order":0, "fulltext_flag":false}], "capacity":1}, "partition_key_info":{"columns":null, "capacity":0}, "aux_vp_tid_array":[]}, "index_arg_list":[], "constraint_list":[], "db_name":"subquery_db", "last_replay_log_id":0, "foreign_key_arg_list":[], "vertical_partition_arg_list":[]}, "index_arg_list":[]}
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***************   Case 6   ***************
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create table t3(c1 int, c2 int);
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{"ObTableStmt":{"partition_fun_expr":[], "range_values_exprs":[], "list_values_exprs":[], "index_partition_resolve_results":[], "part_type":8}, "stmt_type":20, "create_table_arg":{"if_not_exist":false, "schema":{"simple_table_schema":{"tenant_id":1, "database_id":18446744073709551615, "tablegroup_id":1099511627777, "table_id":18446744073709551615, "table_name":"t3", "replica_num":0, "previous_locality_str":"", "min_partition_id":0, "session_id":0, "index_type":0, "table_type":3, "data_table_id":0, "name_casemode":-1, "schema_version":0, "part_level":0, "part_option":{"part_func_type":0, "part_func_expr":"", "part_num":1, "partition_cnt_within_partition_table":-1, "max_used_part_id":0}, "sub_part_option":{"part_func_type":0, "part_func_expr":"", "part_num":1, "partition_cnt_within_partition_table":-1, "max_used_part_id":-1}, "locality_str":"", "zone_list":[], "primary_zone":"", "part_num":0, "subpart_num":0, "partition_num":1, "subpartition_num":0, "partition_array":[{"BasePartition":{"tenant_id":18446744073709551615, "table_id":18446744073709551615, "part_id":0, "name":"p0", "high_bound_val":, "list_row_values":[], "part_idx":0}, "mapping_pg_part_id":-1}], "subpartition_array":null, "index_status":1, "binding":false, "duplicate_scope":0}, "max_used_column_id":17, "max_used_constraint_id":0, "sess_active_time":0, "rowkey_column_num":3, "index_column_num":0, "rowkey_split_pos":0, "block_size":16384, "is_use_bloomfilter":false, "progressive_merge_num":0, "tablet_size":134217728, "pctfree":10, "load_type":0, "index_using_type":0, "def_type":1, "charset_type":2, "collation_type":45, "create_mem_version":0, "index_status":1, "partition_status":0, "code_version":1, "last_modified_frozen_version":0, "comment":"", "pk_comment":"", "create_host":"", "zone_replica_attr_array":[], "region_replica_num_array":[], "tablegroup_name":"", "compress_func_name":"zstd_1.0", "row_store_type":1, "store_format":3, "expire_info":"", "view_schema":{"view_definition":"", "check_option":"none", "is_updatable":"false", "is_materialized":"false"}, "autoinc_column_id":0, "auto_increment":1, "read_only":false, "primary_zone_array":[], "index_tid_array":[], "mv_tid_array":[], "aux_vp_tid_array":[], "base_table_ids":[], "rowkey_info":{"columns":[{"length":0, "column_id":1, "type":{"type":"BIGINT UNSIGNED", "collation":"binary", "coercibility":"NUMERIC"}, "order":0, "fulltext_flag":false}, {"length":0, "column_id":4, "type":{"type":"BIGINT UNSIGNED", "collation":"binary", "coercibility":"NUMERIC"}, "order":0, "fulltext_flag":false}, {"length":0, "column_id":5, "type":{"type":"BIGINT UNSIGNED", "collation":"binary", "coercibility":"NUMERIC"}, "order":0, "fulltext_flag":false}], "capacity":3}, "partition_key_info":{"columns":null, "capacity":0}, "aux_vp_tid_array":[]}, "index_arg_list":[], "constraint_list":[], "db_name":"subquery_db", "last_replay_log_id":0, "foreign_key_arg_list":[], "vertical_partition_arg_list":[]}, "index_arg_list":[]}
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***************   Case 7   ***************
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select * from t1 where c1>ANY(select c1 from t2);
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{
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  "stmt_type":1,
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  "table": [
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     {
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      "table_id":1099511677877,
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      "table_name":"t1",
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      "alias_name":"",
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      "synonym_name":"",
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      "table_type":0,
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      "ref_id":1099511677877,
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      "database_name":"subquery_db",
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      "for_update":false,
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      "wait":-1,
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      "mock_id":-1,
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      "view_base_item":-1
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    }
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  ],
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  "joined_table": [
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  ],
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  "partition_express": [
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  ],
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  "column": [
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     {
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      "column_id":16,
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      "table_id":1099511677877,
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      "column":"c1",
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      "auto_filled_timestamp":false,
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      "default_value": {
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        "NULL":"NULL"
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      },
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      "base_tid":1099511677877,
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      "base_cid":16,
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      "expression": {
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        "item_type":"T_REF_COLUMN",
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        "result_type": {
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          "meta": {
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            "type":"INT",
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            "collation":"binary",
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            "coercibility":"NUMERIC"
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          },
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						|
          "accuracy": {
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						|
            "length":-1,
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						|
            "precision":11,
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						|
            "scale":0
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          },
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          "flag":16387,
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						|
          "calc_type": {
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            "type":"NULL",
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            "collation":"invalid_type",
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            "coercibility":"INVALID"
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          }
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        },
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        "expr_info": [
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						|
          "IS_COLUMN",
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						|
          "CNT_COLUMN"
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						|
        ],
 | 
						|
        "rel_id": [
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						|
          1
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						|
        ],
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						|
        "table_id":1099511677877,
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						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
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						|
        "table_name":"t1",
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						|
        "synonym_name":"",
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						|
        "column_name":"c1",
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						|
        "expr_level":0,
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						|
        "expr_levels": [
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						|
          0
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						|
        ],
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						|
        "column_flags":0,
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						|
        "is_explicited_referece":true,
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						|
        "explicited_ref_count":2,
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						|
        "enum_set_values": [
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						|
        ],
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						|
        "is_lob_column":false
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      }
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    },
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     {
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						|
      "column_id":17,
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      "table_id":1099511677877,
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      "column":"c2",
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      "auto_filled_timestamp":false,
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						|
      "default_value": {
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        "NULL":"NULL"
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						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
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						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
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						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c1",
 | 
						|
      "expr_name":"c1",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c2",
 | 
						|
      "expr_name":"c2",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "rollup":false,
 | 
						|
  "nocycle":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "is_join":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "start_with": [
 | 
						|
  ],
 | 
						|
  "connect_by": [
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
     {
 | 
						|
      "item_type":"T_OP_SQ_GT",
 | 
						|
      "result_type": {
 | 
						|
        "meta": {
 | 
						|
          "type":"TINYINT",
 | 
						|
          "collation":"binary",
 | 
						|
          "coercibility":"NUMERIC"
 | 
						|
        },
 | 
						|
        "accuracy": {
 | 
						|
          "length":-1,
 | 
						|
          "precision":4,
 | 
						|
          "scale":0
 | 
						|
        },
 | 
						|
        "flag":1,
 | 
						|
        "calc_type": {
 | 
						|
          "type":"NULL",
 | 
						|
          "collation":"invalid_type",
 | 
						|
          "coercibility":"INVALID"
 | 
						|
        }
 | 
						|
      },
 | 
						|
      "expr_info": [
 | 
						|
        "CNT_COLUMN",
 | 
						|
        "CNT_SUB_QUERY",
 | 
						|
        "IS_WITH_ANY"
 | 
						|
      ],
 | 
						|
      "rel_id": [
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "expr_levels": [
 | 
						|
        0,
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "children": [
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_COLUMN",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":11,
 | 
						|
              "scale":0
 | 
						|
            },
 | 
						|
            "flag":16387,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_COLUMN",
 | 
						|
            "CNT_COLUMN"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "table_id":1099511677877,
 | 
						|
          "column_id":16,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "table_name":"t1",
 | 
						|
          "synonym_name":"",
 | 
						|
          "column_name":"c1",
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            0
 | 
						|
          ],
 | 
						|
          "column_flags":0,
 | 
						|
          "is_explicited_referece":true,
 | 
						|
          "explicited_ref_count":2,
 | 
						|
          "enum_set_values": [
 | 
						|
          ],
 | 
						|
          "is_lob_column":false
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_QUERY",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"BIGINT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":-1,
 | 
						|
              "scale":-1
 | 
						|
            },
 | 
						|
            "flag":0,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_SUB_QUERY",
 | 
						|
            "CNT_SUB_QUERY"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
          ],
 | 
						|
          "id":0,
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "output_column":1,
 | 
						|
          "is_set":true,
 | 
						|
          "column_types": [
 | 
						|
             {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "enum_set_values": [
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ]
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
  "show_stmt_ctx": {
 | 
						|
    "is_from_show_stmt":false,
 | 
						|
    "global_scope":false,
 | 
						|
    "tenant_id":-1,
 | 
						|
    "show_database_id":-1,
 | 
						|
    "show_table_id":-1,
 | 
						|
    "grants_user_id":-1
 | 
						|
  },
 | 
						|
  "hint": {
 | 
						|
    "read_static":false,
 | 
						|
    "no_rewrite":false,
 | 
						|
    "frozen_version":-1,
 | 
						|
    "topk_precision":-1,
 | 
						|
    "sharding_minimum_row_count":0,
 | 
						|
    "query_timeout":-1,
 | 
						|
    "hotspot":false,
 | 
						|
    "index": [
 | 
						|
    ],
 | 
						|
    "read_consistency":-1,
 | 
						|
    "join_ordered":false,
 | 
						|
    "join_order": [
 | 
						|
    ],
 | 
						|
    "merge_hint_ids": [
 | 
						|
    ],
 | 
						|
    "hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "no_hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "nl_hint_ids": [
 | 
						|
    ],
 | 
						|
    "part_hints": [
 | 
						|
    ],
 | 
						|
    "use_late_materialization":-1,
 | 
						|
    "log_level":"",
 | 
						|
    "max_concurrent":-1,
 | 
						|
    "only_concurrent_hint":false,
 | 
						|
    "has_hint_exclude_concurrent":false,
 | 
						|
    "parallel":-1,
 | 
						|
    "use_px":2,
 | 
						|
    "use join filter":false,
 | 
						|
    "org_pq_distributes": [
 | 
						|
    ],
 | 
						|
    "pq_distributes": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "query_context": {
 | 
						|
    "param_num":0,
 | 
						|
    "fetch_cur_time":true,
 | 
						|
    "calculable_items": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "extra_output_exprs": [
 | 
						|
  ],
 | 
						|
  "current_level":0,
 | 
						|
  "equal_sets": [
 | 
						|
  ],
 | 
						|
  "pseudo_column_exprs": [
 | 
						|
  ],
 | 
						|
  "child_stmts": [
 | 
						|
     {
 | 
						|
      "stmt_type":1,
 | 
						|
      "table": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "table_name":"t2",
 | 
						|
          "alias_name":"",
 | 
						|
          "synonym_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511677878,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "for_update":false,
 | 
						|
          "wait":-1,
 | 
						|
          "mock_id":-1,
 | 
						|
          "view_base_item":-1
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "joined_table": [
 | 
						|
      ],
 | 
						|
      "partition_express": [
 | 
						|
      ],
 | 
						|
      "column": [
 | 
						|
         {
 | 
						|
          "column_id":16,
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "column":"c1",
 | 
						|
          "auto_filled_timestamp":false,
 | 
						|
          "default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "base_tid":1099511677878,
 | 
						|
          "base_cid":16,
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "select": [
 | 
						|
         {
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          },
 | 
						|
          "is_alias":false,
 | 
						|
          "alias_name":"c1",
 | 
						|
          "expr_name":"c1",
 | 
						|
          "default": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "distinct":false,
 | 
						|
      "rollup":false,
 | 
						|
      "nocycle":false,
 | 
						|
      "from": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "is_join":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 8   ***************
 | 
						|
select * from t1 where c1<ALL(select c1 from t2);
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
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            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          },
 | 
						|
          "is_alias":false,
 | 
						|
          "alias_name":"c1",
 | 
						|
          "expr_name":"c1",
 | 
						|
          "default": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "distinct":false,
 | 
						|
      "rollup":false,
 | 
						|
      "nocycle":false,
 | 
						|
      "from": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "is_join":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 9   ***************
 | 
						|
select * from t1 where c1=(select c1 from t2);
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c2",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c1",
 | 
						|
      "expr_name":"c1",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c2",
 | 
						|
      "expr_name":"c2",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "rollup":false,
 | 
						|
  "nocycle":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "is_join":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "start_with": [
 | 
						|
  ],
 | 
						|
  "connect_by": [
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
     {
 | 
						|
      "item_type":"T_OP_EQ",
 | 
						|
      "result_type": {
 | 
						|
        "meta": {
 | 
						|
          "type":"INT",
 | 
						|
          "collation":"binary",
 | 
						|
          "coercibility":"NUMERIC"
 | 
						|
        },
 | 
						|
        "accuracy": {
 | 
						|
          "length":-1,
 | 
						|
          "precision":1,
 | 
						|
          "scale":0
 | 
						|
        },
 | 
						|
        "flag":1,
 | 
						|
        "calc_type": {
 | 
						|
          "type":"INT",
 | 
						|
          "collation":"binary",
 | 
						|
          "coercibility":"NUMERIC"
 | 
						|
        }
 | 
						|
      },
 | 
						|
      "expr_info": [
 | 
						|
        "CNT_COLUMN",
 | 
						|
        "CNT_SUB_QUERY",
 | 
						|
        "IS_WITH_SUBQUERY"
 | 
						|
      ],
 | 
						|
      "rel_id": [
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "expr_levels": [
 | 
						|
        0,
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "children": [
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_COLUMN",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":11,
 | 
						|
              "scale":0
 | 
						|
            },
 | 
						|
            "flag":16387,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_COLUMN",
 | 
						|
            "CNT_COLUMN"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "table_id":1099511677877,
 | 
						|
          "column_id":16,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "table_name":"t1",
 | 
						|
          "synonym_name":"",
 | 
						|
          "column_name":"c1",
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            0
 | 
						|
          ],
 | 
						|
          "column_flags":0,
 | 
						|
          "is_explicited_referece":true,
 | 
						|
          "explicited_ref_count":2,
 | 
						|
          "enum_set_values": [
 | 
						|
          ],
 | 
						|
          "is_lob_column":false
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_QUERY",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":11,
 | 
						|
              "scale":0
 | 
						|
            },
 | 
						|
            "flag":16387,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_SUB_QUERY",
 | 
						|
            "CNT_SUB_QUERY"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
          ],
 | 
						|
          "id":0,
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "output_column":1,
 | 
						|
          "is_set":false,
 | 
						|
          "column_types": [
 | 
						|
             {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "enum_set_values": [
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ]
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
  "show_stmt_ctx": {
 | 
						|
    "is_from_show_stmt":false,
 | 
						|
    "global_scope":false,
 | 
						|
    "tenant_id":-1,
 | 
						|
    "show_database_id":-1,
 | 
						|
    "show_table_id":-1,
 | 
						|
    "grants_user_id":-1
 | 
						|
  },
 | 
						|
  "hint": {
 | 
						|
    "read_static":false,
 | 
						|
    "no_rewrite":false,
 | 
						|
    "frozen_version":-1,
 | 
						|
    "topk_precision":-1,
 | 
						|
    "sharding_minimum_row_count":0,
 | 
						|
    "query_timeout":-1,
 | 
						|
    "hotspot":false,
 | 
						|
    "index": [
 | 
						|
    ],
 | 
						|
    "read_consistency":-1,
 | 
						|
    "join_ordered":false,
 | 
						|
    "join_order": [
 | 
						|
    ],
 | 
						|
    "merge_hint_ids": [
 | 
						|
    ],
 | 
						|
    "hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "no_hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "nl_hint_ids": [
 | 
						|
    ],
 | 
						|
    "part_hints": [
 | 
						|
    ],
 | 
						|
    "use_late_materialization":-1,
 | 
						|
    "log_level":"",
 | 
						|
    "max_concurrent":-1,
 | 
						|
    "only_concurrent_hint":false,
 | 
						|
    "has_hint_exclude_concurrent":false,
 | 
						|
    "parallel":-1,
 | 
						|
    "use_px":2,
 | 
						|
    "use join filter":false,
 | 
						|
    "org_pq_distributes": [
 | 
						|
    ],
 | 
						|
    "pq_distributes": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "query_context": {
 | 
						|
    "param_num":0,
 | 
						|
    "fetch_cur_time":true,
 | 
						|
    "calculable_items": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "extra_output_exprs": [
 | 
						|
  ],
 | 
						|
  "current_level":0,
 | 
						|
  "equal_sets": [
 | 
						|
  ],
 | 
						|
  "pseudo_column_exprs": [
 | 
						|
  ],
 | 
						|
  "child_stmts": [
 | 
						|
     {
 | 
						|
      "stmt_type":1,
 | 
						|
      "table": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "table_name":"t2",
 | 
						|
          "alias_name":"",
 | 
						|
          "synonym_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511677878,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "for_update":false,
 | 
						|
          "wait":-1,
 | 
						|
          "mock_id":-1,
 | 
						|
          "view_base_item":-1
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "joined_table": [
 | 
						|
      ],
 | 
						|
      "partition_express": [
 | 
						|
      ],
 | 
						|
      "column": [
 | 
						|
         {
 | 
						|
          "column_id":16,
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "column":"c1",
 | 
						|
          "auto_filled_timestamp":false,
 | 
						|
          "default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "base_tid":1099511677878,
 | 
						|
          "base_cid":16,
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "select": [
 | 
						|
         {
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          },
 | 
						|
          "is_alias":false,
 | 
						|
          "alias_name":"c1",
 | 
						|
          "expr_name":"c1",
 | 
						|
          "default": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "distinct":false,
 | 
						|
      "rollup":false,
 | 
						|
      "nocycle":false,
 | 
						|
      "from": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "is_join":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 10   ***************
 | 
						|
select * from t1 where c1=ANY(select c1 from t2 where t1.c2>t2.c2);
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c2",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c1",
 | 
						|
      "expr_name":"c1",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
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              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"INT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":-1,
 | 
						|
                  "precision":11,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":0,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_COLUMN",
 | 
						|
                "CNT_COLUMN"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "table_id":1099511677877,
 | 
						|
              "column_id":17,
 | 
						|
              "database_name":"subquery_db",
 | 
						|
              "table_name":"t1",
 | 
						|
              "synonym_name":"",
 | 
						|
              "column_name":"c2",
 | 
						|
              "expr_level":0,
 | 
						|
              "expr_levels": [
 | 
						|
                0
 | 
						|
              ],
 | 
						|
              "column_flags":0,
 | 
						|
              "is_explicited_referece":true,
 | 
						|
              "explicited_ref_count":2,
 | 
						|
              "enum_set_values": [
 | 
						|
              ],
 | 
						|
              "is_lob_column":false
 | 
						|
            },
 | 
						|
             {
 | 
						|
              "item_type":"T_REF_COLUMN",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"INT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":-1,
 | 
						|
                  "precision":11,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":0,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_COLUMN",
 | 
						|
                "CNT_COLUMN"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "table_id":1099511677878,
 | 
						|
              "column_id":17,
 | 
						|
              "database_name":"subquery_db",
 | 
						|
              "table_name":"t2",
 | 
						|
              "synonym_name":"",
 | 
						|
              "column_name":"c2",
 | 
						|
              "expr_level":1,
 | 
						|
              "expr_levels": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "column_flags":0,
 | 
						|
              "is_explicited_referece":true,
 | 
						|
              "explicited_ref_count":1,
 | 
						|
              "enum_set_values": [
 | 
						|
              ],
 | 
						|
              "is_lob_column":false
 | 
						|
            }
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 11   ***************
 | 
						|
select * from t1 where exists(select c1 from t2 where t1.c2>t2.c2);
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c2",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c1",
 | 
						|
      "expr_name":"c1",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c2",
 | 
						|
      "expr_name":"c2",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "rollup":false,
 | 
						|
  "nocycle":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "is_join":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "start_with": [
 | 
						|
  ],
 | 
						|
  "connect_by": [
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
     {
 | 
						|
      "item_type":"T_OP_EXISTS",
 | 
						|
      "result_type": {
 | 
						|
        "meta": {
 | 
						|
          "type":"BIGINT",
 | 
						|
          "collation":"binary",
 | 
						|
          "coercibility":"NUMERIC"
 | 
						|
        },
 | 
						|
        "accuracy": {
 | 
						|
          "length":-1,
 | 
						|
          "precision":1,
 | 
						|
          "scale":0
 | 
						|
        },
 | 
						|
        "flag":1,
 | 
						|
        "calc_type": {
 | 
						|
          "type":"NULL",
 | 
						|
          "collation":"invalid_type",
 | 
						|
          "coercibility":"INVALID"
 | 
						|
        }
 | 
						|
      },
 | 
						|
      "expr_info": [
 | 
						|
        "CNT_SUB_QUERY"
 | 
						|
      ],
 | 
						|
      "rel_id": [
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "expr_levels": [
 | 
						|
        0,
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "children": [
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_QUERY",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"BIGINT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":-1,
 | 
						|
              "scale":-1
 | 
						|
            },
 | 
						|
            "flag":0,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_SUB_QUERY",
 | 
						|
            "CNT_SUB_QUERY"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "id":0,
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            0,
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "output_column":1,
 | 
						|
          "is_set":true,
 | 
						|
          "column_types": [
 | 
						|
             {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "enum_set_values": [
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ]
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
  "show_stmt_ctx": {
 | 
						|
    "is_from_show_stmt":false,
 | 
						|
    "global_scope":false,
 | 
						|
    "tenant_id":-1,
 | 
						|
    "show_database_id":-1,
 | 
						|
    "show_table_id":-1,
 | 
						|
    "grants_user_id":-1
 | 
						|
  },
 | 
						|
  "hint": {
 | 
						|
    "read_static":false,
 | 
						|
    "no_rewrite":false,
 | 
						|
    "frozen_version":-1,
 | 
						|
    "topk_precision":-1,
 | 
						|
    "sharding_minimum_row_count":0,
 | 
						|
    "query_timeout":-1,
 | 
						|
    "hotspot":false,
 | 
						|
    "index": [
 | 
						|
    ],
 | 
						|
    "read_consistency":-1,
 | 
						|
    "join_ordered":false,
 | 
						|
    "join_order": [
 | 
						|
    ],
 | 
						|
    "merge_hint_ids": [
 | 
						|
    ],
 | 
						|
    "hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "no_hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "nl_hint_ids": [
 | 
						|
    ],
 | 
						|
    "part_hints": [
 | 
						|
    ],
 | 
						|
    "use_late_materialization":-1,
 | 
						|
    "log_level":"",
 | 
						|
    "max_concurrent":-1,
 | 
						|
    "only_concurrent_hint":false,
 | 
						|
    "has_hint_exclude_concurrent":false,
 | 
						|
    "parallel":-1,
 | 
						|
    "use_px":2,
 | 
						|
    "use join filter":false,
 | 
						|
    "org_pq_distributes": [
 | 
						|
    ],
 | 
						|
    "pq_distributes": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "query_context": {
 | 
						|
    "param_num":0,
 | 
						|
    "fetch_cur_time":true,
 | 
						|
    "calculable_items": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "extra_output_exprs": [
 | 
						|
  ],
 | 
						|
  "current_level":0,
 | 
						|
  "equal_sets": [
 | 
						|
  ],
 | 
						|
  "pseudo_column_exprs": [
 | 
						|
  ],
 | 
						|
  "child_stmts": [
 | 
						|
     {
 | 
						|
      "stmt_type":1,
 | 
						|
      "table": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "table_name":"t2",
 | 
						|
          "alias_name":"",
 | 
						|
          "synonym_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511677878,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "for_update":false,
 | 
						|
          "wait":-1,
 | 
						|
          "mock_id":-1,
 | 
						|
          "view_base_item":-1
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "joined_table": [
 | 
						|
      ],
 | 
						|
      "partition_express": [
 | 
						|
      ],
 | 
						|
      "column": [
 | 
						|
         {
 | 
						|
          "column_id":17,
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "column":"c2",
 | 
						|
          "auto_filled_timestamp":false,
 | 
						|
          "default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "base_tid":1099511677878,
 | 
						|
          "base_cid":17,
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":17,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c2",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "column_id":16,
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "column":"c1",
 | 
						|
          "auto_filled_timestamp":false,
 | 
						|
          "default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "base_tid":1099511677878,
 | 
						|
          "base_cid":16,
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "select": [
 | 
						|
         {
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          },
 | 
						|
          "is_alias":false,
 | 
						|
          "alias_name":"c1",
 | 
						|
          "expr_name":"c1",
 | 
						|
          "default": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "distinct":false,
 | 
						|
      "rollup":false,
 | 
						|
      "nocycle":false,
 | 
						|
      "from": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "is_join":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
         {
 | 
						|
          "item_type":"T_OP_GT",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":1,
 | 
						|
              "scale":0
 | 
						|
            },
 | 
						|
            "flag":0,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "CNT_COLUMN"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "expr_levels": [
 | 
						|
            0,
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "children": [
 | 
						|
             {
 | 
						|
              "item_type":"T_REF_COLUMN",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"INT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":-1,
 | 
						|
                  "precision":11,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":0,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_COLUMN",
 | 
						|
                "CNT_COLUMN"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "table_id":1099511677877,
 | 
						|
              "column_id":17,
 | 
						|
              "database_name":"subquery_db",
 | 
						|
              "table_name":"t1",
 | 
						|
              "synonym_name":"",
 | 
						|
              "column_name":"c2",
 | 
						|
              "expr_level":0,
 | 
						|
              "expr_levels": [
 | 
						|
                0
 | 
						|
              ],
 | 
						|
              "column_flags":0,
 | 
						|
              "is_explicited_referece":true,
 | 
						|
              "explicited_ref_count":2,
 | 
						|
              "enum_set_values": [
 | 
						|
              ],
 | 
						|
              "is_lob_column":false
 | 
						|
            },
 | 
						|
             {
 | 
						|
              "item_type":"T_REF_COLUMN",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"INT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":-1,
 | 
						|
                  "precision":11,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":0,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_COLUMN",
 | 
						|
                "CNT_COLUMN"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "table_id":1099511677878,
 | 
						|
              "column_id":17,
 | 
						|
              "database_name":"subquery_db",
 | 
						|
              "table_name":"t2",
 | 
						|
              "synonym_name":"",
 | 
						|
              "column_name":"c2",
 | 
						|
              "expr_level":1,
 | 
						|
              "expr_levels": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "column_flags":0,
 | 
						|
              "is_explicited_referece":true,
 | 
						|
              "explicited_ref_count":1,
 | 
						|
              "enum_set_values": [
 | 
						|
              ],
 | 
						|
              "is_lob_column":false
 | 
						|
            }
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 12   ***************
 | 
						|
select * from t1 where 1<ANY(select c1 from t2);
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
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						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "select": [
 | 
						|
         {
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          },
 | 
						|
          "is_alias":false,
 | 
						|
          "alias_name":"c1",
 | 
						|
          "expr_name":"c1",
 | 
						|
          "default": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "distinct":false,
 | 
						|
      "rollup":false,
 | 
						|
      "nocycle":false,
 | 
						|
      "from": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "is_join":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":1,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 13   ***************
 | 
						|
select c2 from t1 where exists(select c2 from t2 where t1.c1>t2.c1);
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c2",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c2",
 | 
						|
      "expr_name":"c2",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "rollup":false,
 | 
						|
  "nocycle":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "is_join":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "start_with": [
 | 
						|
  ],
 | 
						|
  "connect_by": [
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
     {
 | 
						|
      "item_type":"T_OP_EXISTS",
 | 
						|
      "result_type": {
 | 
						|
        "meta": {
 | 
						|
          "type":"BIGINT",
 | 
						|
          "collation":"binary",
 | 
						|
          "coercibility":"NUMERIC"
 | 
						|
        },
 | 
						|
        "accuracy": {
 | 
						|
          "length":-1,
 | 
						|
          "precision":1,
 | 
						|
          "scale":0
 | 
						|
        },
 | 
						|
        "flag":1,
 | 
						|
        "calc_type": {
 | 
						|
          "type":"NULL",
 | 
						|
          "collation":"invalid_type",
 | 
						|
          "coercibility":"INVALID"
 | 
						|
        }
 | 
						|
      },
 | 
						|
      "expr_info": [
 | 
						|
        "CNT_SUB_QUERY"
 | 
						|
      ],
 | 
						|
      "rel_id": [
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "expr_levels": [
 | 
						|
        0,
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "children": [
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_QUERY",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"BIGINT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":-1,
 | 
						|
              "scale":-1
 | 
						|
            },
 | 
						|
            "flag":0,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_SUB_QUERY",
 | 
						|
            "CNT_SUB_QUERY"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "id":0,
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            0,
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "output_column":1,
 | 
						|
          "is_set":true,
 | 
						|
          "column_types": [
 | 
						|
             {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "enum_set_values": [
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ]
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
  "show_stmt_ctx": {
 | 
						|
    "is_from_show_stmt":false,
 | 
						|
    "global_scope":false,
 | 
						|
    "tenant_id":-1,
 | 
						|
    "show_database_id":-1,
 | 
						|
    "show_table_id":-1,
 | 
						|
    "grants_user_id":-1
 | 
						|
  },
 | 
						|
  "hint": {
 | 
						|
    "read_static":false,
 | 
						|
    "no_rewrite":false,
 | 
						|
    "frozen_version":-1,
 | 
						|
    "topk_precision":-1,
 | 
						|
    "sharding_minimum_row_count":0,
 | 
						|
    "query_timeout":-1,
 | 
						|
    "hotspot":false,
 | 
						|
    "index": [
 | 
						|
    ],
 | 
						|
    "read_consistency":-1,
 | 
						|
    "join_ordered":false,
 | 
						|
    "join_order": [
 | 
						|
    ],
 | 
						|
    "merge_hint_ids": [
 | 
						|
    ],
 | 
						|
    "hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "no_hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "nl_hint_ids": [
 | 
						|
    ],
 | 
						|
    "part_hints": [
 | 
						|
    ],
 | 
						|
    "use_late_materialization":-1,
 | 
						|
    "log_level":"",
 | 
						|
    "max_concurrent":-1,
 | 
						|
    "only_concurrent_hint":false,
 | 
						|
    "has_hint_exclude_concurrent":false,
 | 
						|
    "parallel":-1,
 | 
						|
    "use_px":2,
 | 
						|
    "use join filter":false,
 | 
						|
    "org_pq_distributes": [
 | 
						|
    ],
 | 
						|
    "pq_distributes": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "query_context": {
 | 
						|
    "param_num":0,
 | 
						|
    "fetch_cur_time":true,
 | 
						|
    "calculable_items": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "extra_output_exprs": [
 | 
						|
  ],
 | 
						|
  "current_level":0,
 | 
						|
  "equal_sets": [
 | 
						|
  ],
 | 
						|
  "pseudo_column_exprs": [
 | 
						|
  ],
 | 
						|
  "child_stmts": [
 | 
						|
     {
 | 
						|
      "stmt_type":1,
 | 
						|
      "table": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "table_name":"t2",
 | 
						|
          "alias_name":"",
 | 
						|
          "synonym_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511677878,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "for_update":false,
 | 
						|
          "wait":-1,
 | 
						|
          "mock_id":-1,
 | 
						|
          "view_base_item":-1
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "joined_table": [
 | 
						|
      ],
 | 
						|
      "partition_express": [
 | 
						|
      ],
 | 
						|
      "column": [
 | 
						|
         {
 | 
						|
          "column_id":16,
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "column":"c1",
 | 
						|
          "auto_filled_timestamp":false,
 | 
						|
          "default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "base_tid":1099511677878,
 | 
						|
          "base_cid":16,
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "column_id":17,
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "column":"c2",
 | 
						|
          "auto_filled_timestamp":false,
 | 
						|
          "default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "base_tid":1099511677878,
 | 
						|
          "base_cid":17,
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":17,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c2",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "select": [
 | 
						|
         {
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":17,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c2",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          },
 | 
						|
          "is_alias":false,
 | 
						|
          "alias_name":"c2",
 | 
						|
          "expr_name":"c2",
 | 
						|
          "default": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "distinct":false,
 | 
						|
      "rollup":false,
 | 
						|
      "nocycle":false,
 | 
						|
      "from": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "is_join":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
         {
 | 
						|
          "item_type":"T_OP_GT",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":1,
 | 
						|
              "scale":0
 | 
						|
            },
 | 
						|
            "flag":1,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "CNT_COLUMN"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "expr_levels": [
 | 
						|
            0,
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "children": [
 | 
						|
             {
 | 
						|
              "item_type":"T_REF_COLUMN",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"INT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":-1,
 | 
						|
                  "precision":11,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":16387,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_COLUMN",
 | 
						|
                "CNT_COLUMN"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "table_id":1099511677877,
 | 
						|
              "column_id":16,
 | 
						|
              "database_name":"subquery_db",
 | 
						|
              "table_name":"t1",
 | 
						|
              "synonym_name":"",
 | 
						|
              "column_name":"c1",
 | 
						|
              "expr_level":0,
 | 
						|
              "expr_levels": [
 | 
						|
                0
 | 
						|
              ],
 | 
						|
              "column_flags":0,
 | 
						|
              "is_explicited_referece":true,
 | 
						|
              "explicited_ref_count":1,
 | 
						|
              "enum_set_values": [
 | 
						|
              ],
 | 
						|
              "is_lob_column":false
 | 
						|
            },
 | 
						|
             {
 | 
						|
              "item_type":"T_REF_COLUMN",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"INT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":-1,
 | 
						|
                  "precision":11,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":16387,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_COLUMN",
 | 
						|
                "CNT_COLUMN"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "table_id":1099511677878,
 | 
						|
              "column_id":16,
 | 
						|
              "database_name":"subquery_db",
 | 
						|
              "table_name":"t2",
 | 
						|
              "synonym_name":"",
 | 
						|
              "column_name":"c1",
 | 
						|
              "expr_level":1,
 | 
						|
              "expr_levels": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "column_flags":0,
 | 
						|
              "is_explicited_referece":true,
 | 
						|
              "explicited_ref_count":1,
 | 
						|
              "enum_set_values": [
 | 
						|
              ],
 | 
						|
              "is_lob_column":false
 | 
						|
            }
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 14   ***************
 | 
						|
select * from t1 where c1>(select c1 from t2);
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
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        "explicited_ref_count":2,
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 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          },
 | 
						|
          "is_alias":false,
 | 
						|
          "alias_name":"c1",
 | 
						|
          "expr_name":"c1",
 | 
						|
          "default": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "distinct":false,
 | 
						|
      "rollup":false,
 | 
						|
      "nocycle":false,
 | 
						|
      "from": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "is_join":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 15   ***************
 | 
						|
select * from t1 where exists(select * from t2 where t1.c1=t2.c2);
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c2",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c1",
 | 
						|
      "expr_name":"c1",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c2",
 | 
						|
      "expr_name":"c2",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "rollup":false,
 | 
						|
  "nocycle":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "is_join":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "start_with": [
 | 
						|
  ],
 | 
						|
  "connect_by": [
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
     {
 | 
						|
      "item_type":"T_OP_EXISTS",
 | 
						|
      "result_type": {
 | 
						|
        "meta": {
 | 
						|
          "type":"BIGINT",
 | 
						|
          "collation":"binary",
 | 
						|
          "coercibility":"NUMERIC"
 | 
						|
        },
 | 
						|
        "accuracy": {
 | 
						|
          "length":-1,
 | 
						|
          "precision":1,
 | 
						|
          "scale":0
 | 
						|
        },
 | 
						|
        "flag":1,
 | 
						|
        "calc_type": {
 | 
						|
          "type":"NULL",
 | 
						|
          "collation":"invalid_type",
 | 
						|
          "coercibility":"INVALID"
 | 
						|
        }
 | 
						|
      },
 | 
						|
      "expr_info": [
 | 
						|
        "CNT_SUB_QUERY"
 | 
						|
      ],
 | 
						|
      "rel_id": [
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "expr_levels": [
 | 
						|
        0,
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "children": [
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_QUERY",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"BIGINT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":-1,
 | 
						|
              "scale":-1
 | 
						|
            },
 | 
						|
            "flag":0,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_SUB_QUERY",
 | 
						|
            "CNT_SUB_QUERY"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "id":0,
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            0,
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "output_column":3,
 | 
						|
          "is_set":true,
 | 
						|
          "column_types": [
 | 
						|
             {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
             {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
             {
 | 
						|
              "meta": {
 | 
						|
                "type":"VARCHAR",
 | 
						|
                "collation":"utf8mb4_general_ci",
 | 
						|
                "coercibility":"IMPLICIT"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":32,
 | 
						|
                "precision":-1,
 | 
						|
                "scale":-1
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "enum_set_values": [
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ]
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
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            },
 | 
						|
             {
 | 
						|
              "item_type":"T_REF_COLUMN",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"INT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":-1,
 | 
						|
                  "precision":11,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":0,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_COLUMN",
 | 
						|
                "CNT_COLUMN"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "table_id":1099511677878,
 | 
						|
              "column_id":17,
 | 
						|
              "database_name":"subquery_db",
 | 
						|
              "table_name":"t2",
 | 
						|
              "synonym_name":"",
 | 
						|
              "column_name":"c2",
 | 
						|
              "expr_level":1,
 | 
						|
              "expr_levels": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "column_flags":0,
 | 
						|
              "is_explicited_referece":true,
 | 
						|
              "explicited_ref_count":2,
 | 
						|
              "enum_set_values": [
 | 
						|
              ],
 | 
						|
              "is_lob_column":false
 | 
						|
            }
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 16   ***************
 | 
						|
select * from t1 where c1 in (select c1 from t1);
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c2",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c1",
 | 
						|
      "expr_name":"c1",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c2",
 | 
						|
      "expr_name":"c2",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "rollup":false,
 | 
						|
  "nocycle":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "is_join":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "start_with": [
 | 
						|
  ],
 | 
						|
  "connect_by": [
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
     {
 | 
						|
      "item_type":"T_OP_SQ_EQ",
 | 
						|
      "result_type": {
 | 
						|
        "meta": {
 | 
						|
          "type":"TINYINT",
 | 
						|
          "collation":"binary",
 | 
						|
          "coercibility":"NUMERIC"
 | 
						|
        },
 | 
						|
        "accuracy": {
 | 
						|
          "length":-1,
 | 
						|
          "precision":4,
 | 
						|
          "scale":0
 | 
						|
        },
 | 
						|
        "flag":1,
 | 
						|
        "calc_type": {
 | 
						|
          "type":"NULL",
 | 
						|
          "collation":"invalid_type",
 | 
						|
          "coercibility":"INVALID"
 | 
						|
        }
 | 
						|
      },
 | 
						|
      "expr_info": [
 | 
						|
        "CNT_COLUMN",
 | 
						|
        "CNT_SUB_QUERY",
 | 
						|
        "IS_WITH_ANY"
 | 
						|
      ],
 | 
						|
      "rel_id": [
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "expr_levels": [
 | 
						|
        0,
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "children": [
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_COLUMN",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":11,
 | 
						|
              "scale":0
 | 
						|
            },
 | 
						|
            "flag":16387,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_COLUMN",
 | 
						|
            "CNT_COLUMN"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "table_id":1099511677877,
 | 
						|
          "column_id":16,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "table_name":"t1",
 | 
						|
          "synonym_name":"",
 | 
						|
          "column_name":"c1",
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            0
 | 
						|
          ],
 | 
						|
          "column_flags":0,
 | 
						|
          "is_explicited_referece":true,
 | 
						|
          "explicited_ref_count":2,
 | 
						|
          "enum_set_values": [
 | 
						|
          ],
 | 
						|
          "is_lob_column":false
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_QUERY",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"BIGINT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":-1,
 | 
						|
              "scale":-1
 | 
						|
            },
 | 
						|
            "flag":0,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_SUB_QUERY",
 | 
						|
            "CNT_SUB_QUERY"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
          ],
 | 
						|
          "id":0,
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "output_column":1,
 | 
						|
          "is_set":true,
 | 
						|
          "column_types": [
 | 
						|
             {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "enum_set_values": [
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ]
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
  "show_stmt_ctx": {
 | 
						|
    "is_from_show_stmt":false,
 | 
						|
    "global_scope":false,
 | 
						|
    "tenant_id":-1,
 | 
						|
    "show_database_id":-1,
 | 
						|
    "show_table_id":-1,
 | 
						|
    "grants_user_id":-1
 | 
						|
  },
 | 
						|
  "hint": {
 | 
						|
    "read_static":false,
 | 
						|
    "no_rewrite":false,
 | 
						|
    "frozen_version":-1,
 | 
						|
    "topk_precision":-1,
 | 
						|
    "sharding_minimum_row_count":0,
 | 
						|
    "query_timeout":-1,
 | 
						|
    "hotspot":false,
 | 
						|
    "index": [
 | 
						|
    ],
 | 
						|
    "read_consistency":-1,
 | 
						|
    "join_ordered":false,
 | 
						|
    "join_order": [
 | 
						|
    ],
 | 
						|
    "merge_hint_ids": [
 | 
						|
    ],
 | 
						|
    "hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "no_hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "nl_hint_ids": [
 | 
						|
    ],
 | 
						|
    "part_hints": [
 | 
						|
    ],
 | 
						|
    "use_late_materialization":-1,
 | 
						|
    "log_level":"",
 | 
						|
    "max_concurrent":-1,
 | 
						|
    "only_concurrent_hint":false,
 | 
						|
    "has_hint_exclude_concurrent":false,
 | 
						|
    "parallel":-1,
 | 
						|
    "use_px":2,
 | 
						|
    "use join filter":false,
 | 
						|
    "org_pq_distributes": [
 | 
						|
    ],
 | 
						|
    "pq_distributes": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "query_context": {
 | 
						|
    "param_num":0,
 | 
						|
    "fetch_cur_time":true,
 | 
						|
    "calculable_items": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "extra_output_exprs": [
 | 
						|
  ],
 | 
						|
  "current_level":0,
 | 
						|
  "equal_sets": [
 | 
						|
  ],
 | 
						|
  "pseudo_column_exprs": [
 | 
						|
  ],
 | 
						|
  "child_stmts": [
 | 
						|
     {
 | 
						|
      "stmt_type":1,
 | 
						|
      "table": [
 | 
						|
         {
 | 
						|
          "table_id":-2,
 | 
						|
          "table_name":"t1",
 | 
						|
          "alias_name":"t1",
 | 
						|
          "synonym_name":"",
 | 
						|
          "table_type":1,
 | 
						|
          "ref_id":1099511677877,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "for_update":false,
 | 
						|
          "wait":-1,
 | 
						|
          "mock_id":-1,
 | 
						|
          "view_base_item":-1
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "joined_table": [
 | 
						|
      ],
 | 
						|
      "partition_express": [
 | 
						|
      ],
 | 
						|
      "column": [
 | 
						|
         {
 | 
						|
          "column_id":16,
 | 
						|
          "table_id":-2,
 | 
						|
          "column":"c1",
 | 
						|
          "auto_filled_timestamp":false,
 | 
						|
          "default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "base_tid":1099511677877,
 | 
						|
          "base_cid":16,
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":-2,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t1",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "select": [
 | 
						|
         {
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":-2,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t1",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          },
 | 
						|
          "is_alias":false,
 | 
						|
          "alias_name":"c1",
 | 
						|
          "expr_name":"c1",
 | 
						|
          "default": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "distinct":false,
 | 
						|
      "rollup":false,
 | 
						|
      "nocycle":false,
 | 
						|
      "from": [
 | 
						|
         {
 | 
						|
          "table_id":-2,
 | 
						|
          "is_join":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 17   ***************
 | 
						|
select * from (select * from t1 limit 1) t;
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":-2,
 | 
						|
      "table_name":"t",
 | 
						|
      "alias_name":"t",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":2,
 | 
						|
      "ref_id":-1,
 | 
						|
      "database_name":"",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":-2,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":-2,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"",
 | 
						|
        "table_name":"t",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "table_id":-2,
 | 
						|
      "column":"c2",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":-2,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"",
 | 
						|
        "table_name":"t",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":-2,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"",
 | 
						|
        "table_name":"t",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c1",
 | 
						|
      "expr_name":"c1",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
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  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 18   ***************
 | 
						|
select c1 from t1 where c1 not in (select c1 from t2 where c2 not in (select c2 from t2));
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c1",
 | 
						|
      "expr_name":"c1",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "rollup":false,
 | 
						|
  "nocycle":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "is_join":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "start_with": [
 | 
						|
  ],
 | 
						|
  "connect_by": [
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
     {
 | 
						|
      "item_type":"T_OP_SQ_NE",
 | 
						|
      "result_type": {
 | 
						|
        "meta": {
 | 
						|
          "type":"TINYINT",
 | 
						|
          "collation":"binary",
 | 
						|
          "coercibility":"NUMERIC"
 | 
						|
        },
 | 
						|
        "accuracy": {
 | 
						|
          "length":-1,
 | 
						|
          "precision":4,
 | 
						|
          "scale":0
 | 
						|
        },
 | 
						|
        "flag":1,
 | 
						|
        "calc_type": {
 | 
						|
          "type":"NULL",
 | 
						|
          "collation":"invalid_type",
 | 
						|
          "coercibility":"INVALID"
 | 
						|
        }
 | 
						|
      },
 | 
						|
      "expr_info": [
 | 
						|
        "CNT_COLUMN",
 | 
						|
        "CNT_SUB_QUERY",
 | 
						|
        "IS_WITH_ALL"
 | 
						|
      ],
 | 
						|
      "rel_id": [
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "expr_levels": [
 | 
						|
        0,
 | 
						|
        1,
 | 
						|
        2
 | 
						|
      ],
 | 
						|
      "children": [
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_COLUMN",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":11,
 | 
						|
              "scale":0
 | 
						|
            },
 | 
						|
            "flag":16387,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_COLUMN",
 | 
						|
            "CNT_COLUMN"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "table_id":1099511677877,
 | 
						|
          "column_id":16,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "table_name":"t1",
 | 
						|
          "synonym_name":"",
 | 
						|
          "column_name":"c1",
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            0
 | 
						|
          ],
 | 
						|
          "column_flags":0,
 | 
						|
          "is_explicited_referece":true,
 | 
						|
          "explicited_ref_count":2,
 | 
						|
          "enum_set_values": [
 | 
						|
          ],
 | 
						|
          "is_lob_column":false
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_QUERY",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"BIGINT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":-1,
 | 
						|
              "scale":-1
 | 
						|
            },
 | 
						|
            "flag":0,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_SUB_QUERY",
 | 
						|
            "CNT_SUB_QUERY"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
          ],
 | 
						|
          "id":0,
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            1,
 | 
						|
            2
 | 
						|
          ],
 | 
						|
          "output_column":1,
 | 
						|
          "is_set":true,
 | 
						|
          "column_types": [
 | 
						|
             {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "enum_set_values": [
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ]
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
  "show_stmt_ctx": {
 | 
						|
    "is_from_show_stmt":false,
 | 
						|
    "global_scope":false,
 | 
						|
    "tenant_id":-1,
 | 
						|
    "show_database_id":-1,
 | 
						|
    "show_table_id":-1,
 | 
						|
    "grants_user_id":-1
 | 
						|
  },
 | 
						|
  "hint": {
 | 
						|
    "read_static":false,
 | 
						|
    "no_rewrite":false,
 | 
						|
    "frozen_version":-1,
 | 
						|
    "topk_precision":-1,
 | 
						|
    "sharding_minimum_row_count":0,
 | 
						|
    "query_timeout":-1,
 | 
						|
    "hotspot":false,
 | 
						|
    "index": [
 | 
						|
    ],
 | 
						|
    "read_consistency":-1,
 | 
						|
    "join_ordered":false,
 | 
						|
    "join_order": [
 | 
						|
    ],
 | 
						|
    "merge_hint_ids": [
 | 
						|
    ],
 | 
						|
    "hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "no_hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "nl_hint_ids": [
 | 
						|
    ],
 | 
						|
    "part_hints": [
 | 
						|
    ],
 | 
						|
    "use_late_materialization":-1,
 | 
						|
    "log_level":"",
 | 
						|
    "max_concurrent":-1,
 | 
						|
    "only_concurrent_hint":false,
 | 
						|
    "has_hint_exclude_concurrent":false,
 | 
						|
    "parallel":-1,
 | 
						|
    "use_px":2,
 | 
						|
    "use join filter":false,
 | 
						|
    "org_pq_distributes": [
 | 
						|
    ],
 | 
						|
    "pq_distributes": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "query_context": {
 | 
						|
    "param_num":0,
 | 
						|
    "fetch_cur_time":true,
 | 
						|
    "calculable_items": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "extra_output_exprs": [
 | 
						|
  ],
 | 
						|
  "current_level":0,
 | 
						|
  "equal_sets": [
 | 
						|
  ],
 | 
						|
  "pseudo_column_exprs": [
 | 
						|
  ],
 | 
						|
  "child_stmts": [
 | 
						|
     {
 | 
						|
      "stmt_type":1,
 | 
						|
      "table": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "table_name":"t2",
 | 
						|
          "alias_name":"",
 | 
						|
          "synonym_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511677878,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "for_update":false,
 | 
						|
          "wait":-1,
 | 
						|
          "mock_id":-1,
 | 
						|
          "view_base_item":-1
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "joined_table": [
 | 
						|
      ],
 | 
						|
      "partition_express": [
 | 
						|
      ],
 | 
						|
      "column": [
 | 
						|
         {
 | 
						|
          "column_id":17,
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "column":"c2",
 | 
						|
          "auto_filled_timestamp":false,
 | 
						|
          "default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "base_tid":1099511677878,
 | 
						|
          "base_cid":17,
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":17,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c2",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "column_id":16,
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "column":"c1",
 | 
						|
          "auto_filled_timestamp":false,
 | 
						|
          "default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "base_tid":1099511677878,
 | 
						|
          "base_cid":16,
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "select": [
 | 
						|
         {
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          },
 | 
						|
          "is_alias":false,
 | 
						|
          "alias_name":"c1",
 | 
						|
          "expr_name":"c1",
 | 
						|
          "default": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "distinct":false,
 | 
						|
      "rollup":false,
 | 
						|
      "nocycle":false,
 | 
						|
      "from": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "is_join":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
         {
 | 
						|
          "item_type":"T_OP_SQ_NE",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"TINYINT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":4,
 | 
						|
              "scale":0
 | 
						|
            },
 | 
						|
            "flag":0,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "CNT_COLUMN",
 | 
						|
            "CNT_SUB_QUERY",
 | 
						|
            "IS_WITH_ALL"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "expr_levels": [
 | 
						|
            1,
 | 
						|
            2
 | 
						|
          ],
 | 
						|
          "children": [
 | 
						|
             {
 | 
						|
              "item_type":"T_REF_COLUMN",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"INT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":-1,
 | 
						|
                  "precision":11,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":0,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_COLUMN",
 | 
						|
                "CNT_COLUMN"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "table_id":1099511677878,
 | 
						|
              "column_id":17,
 | 
						|
              "database_name":"subquery_db",
 | 
						|
              "table_name":"t2",
 | 
						|
              "synonym_name":"",
 | 
						|
              "column_name":"c2",
 | 
						|
              "expr_level":1,
 | 
						|
              "expr_levels": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "column_flags":0,
 | 
						|
              "is_explicited_referece":true,
 | 
						|
              "explicited_ref_count":1,
 | 
						|
              "enum_set_values": [
 | 
						|
              ],
 | 
						|
              "is_lob_column":false
 | 
						|
            },
 | 
						|
             {
 | 
						|
              "item_type":"T_REF_QUERY",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"BIGINT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":-1,
 | 
						|
                  "precision":-1,
 | 
						|
                  "scale":-1
 | 
						|
                },
 | 
						|
                "flag":0,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_SUB_QUERY",
 | 
						|
                "CNT_SUB_QUERY"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
              ],
 | 
						|
              "id":0,
 | 
						|
              "expr_level":1,
 | 
						|
              "expr_levels": [
 | 
						|
                2
 | 
						|
              ],
 | 
						|
              "output_column":1,
 | 
						|
              "is_set":true,
 | 
						|
              "column_types": [
 | 
						|
                 {
 | 
						|
                  "meta": {
 | 
						|
                    "type":"INT",
 | 
						|
                    "collation":"binary",
 | 
						|
                    "coercibility":"NUMERIC"
 | 
						|
                  },
 | 
						|
                  "accuracy": {
 | 
						|
                    "length":-1,
 | 
						|
                    "precision":11,
 | 
						|
                    "scale":0
 | 
						|
                  },
 | 
						|
                  "flag":0,
 | 
						|
                  "calc_type": {
 | 
						|
                    "type":"NULL",
 | 
						|
                    "collation":"invalid_type",
 | 
						|
                    "coercibility":"INVALID"
 | 
						|
                  }
 | 
						|
                }
 | 
						|
              ],
 | 
						|
              "enum_set_values": [
 | 
						|
              ]
 | 
						|
            }
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
         {
 | 
						|
          "stmt_type":1,
 | 
						|
          "table": [
 | 
						|
             {
 | 
						|
              "table_id":-2,
 | 
						|
              "table_name":"t2",
 | 
						|
              "alias_name":"t2",
 | 
						|
              "synonym_name":"",
 | 
						|
              "table_type":1,
 | 
						|
              "ref_id":1099511677878,
 | 
						|
              "database_name":"subquery_db",
 | 
						|
              "for_update":false,
 | 
						|
              "wait":-1,
 | 
						|
              "mock_id":-1,
 | 
						|
              "view_base_item":-1
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "joined_table": [
 | 
						|
          ],
 | 
						|
          "partition_express": [
 | 
						|
          ],
 | 
						|
          "column": [
 | 
						|
             {
 | 
						|
              "column_id":17,
 | 
						|
              "table_id":-2,
 | 
						|
              "column":"c2",
 | 
						|
              "auto_filled_timestamp":false,
 | 
						|
              "default_value": {
 | 
						|
                "NULL":"NULL"
 | 
						|
              },
 | 
						|
              "base_tid":1099511677878,
 | 
						|
              "base_cid":17,
 | 
						|
              "expression": {
 | 
						|
                "item_type":"T_REF_COLUMN",
 | 
						|
                "result_type": {
 | 
						|
                  "meta": {
 | 
						|
                    "type":"INT",
 | 
						|
                    "collation":"binary",
 | 
						|
                    "coercibility":"NUMERIC"
 | 
						|
                  },
 | 
						|
                  "accuracy": {
 | 
						|
                    "length":-1,
 | 
						|
                    "precision":11,
 | 
						|
                    "scale":0
 | 
						|
                  },
 | 
						|
                  "flag":0,
 | 
						|
                  "calc_type": {
 | 
						|
                    "type":"NULL",
 | 
						|
                    "collation":"invalid_type",
 | 
						|
                    "coercibility":"INVALID"
 | 
						|
                  }
 | 
						|
                },
 | 
						|
                "expr_info": [
 | 
						|
                  "IS_COLUMN",
 | 
						|
                  "CNT_COLUMN"
 | 
						|
                ],
 | 
						|
                "rel_id": [
 | 
						|
                  1
 | 
						|
                ],
 | 
						|
                "table_id":-2,
 | 
						|
                "column_id":17,
 | 
						|
                "database_name":"subquery_db",
 | 
						|
                "table_name":"t2",
 | 
						|
                "synonym_name":"",
 | 
						|
                "column_name":"c2",
 | 
						|
                "expr_level":2,
 | 
						|
                "expr_levels": [
 | 
						|
                  2
 | 
						|
                ],
 | 
						|
                "column_flags":0,
 | 
						|
                "is_explicited_referece":true,
 | 
						|
                "explicited_ref_count":1,
 | 
						|
                "enum_set_values": [
 | 
						|
                ],
 | 
						|
                "is_lob_column":false
 | 
						|
              }
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "select": [
 | 
						|
             {
 | 
						|
              "expression": {
 | 
						|
                "item_type":"T_REF_COLUMN",
 | 
						|
                "result_type": {
 | 
						|
                  "meta": {
 | 
						|
                    "type":"INT",
 | 
						|
                    "collation":"binary",
 | 
						|
                    "coercibility":"NUMERIC"
 | 
						|
                  },
 | 
						|
                  "accuracy": {
 | 
						|
                    "length":-1,
 | 
						|
                    "precision":11,
 | 
						|
                    "scale":0
 | 
						|
                  },
 | 
						|
                  "flag":0,
 | 
						|
                  "calc_type": {
 | 
						|
                    "type":"NULL",
 | 
						|
                    "collation":"invalid_type",
 | 
						|
                    "coercibility":"INVALID"
 | 
						|
                  }
 | 
						|
                },
 | 
						|
                "expr_info": [
 | 
						|
                  "IS_COLUMN",
 | 
						|
                  "CNT_COLUMN"
 | 
						|
                ],
 | 
						|
                "rel_id": [
 | 
						|
                  1
 | 
						|
                ],
 | 
						|
                "table_id":-2,
 | 
						|
                "column_id":17,
 | 
						|
                "database_name":"subquery_db",
 | 
						|
                "table_name":"t2",
 | 
						|
                "synonym_name":"",
 | 
						|
                "column_name":"c2",
 | 
						|
                "expr_level":2,
 | 
						|
                "expr_levels": [
 | 
						|
                  2
 | 
						|
                ],
 | 
						|
                "column_flags":0,
 | 
						|
                "is_explicited_referece":true,
 | 
						|
                "explicited_ref_count":1,
 | 
						|
                "enum_set_values": [
 | 
						|
                ],
 | 
						|
                "is_lob_column":false
 | 
						|
              },
 | 
						|
              "is_alias":false,
 | 
						|
              "alias_name":"c2",
 | 
						|
              "expr_name":"c2",
 | 
						|
              "default": {
 | 
						|
                "NULL":"NULL"
 | 
						|
              }
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "distinct":false,
 | 
						|
          "rollup":false,
 | 
						|
          "nocycle":false,
 | 
						|
          "from": [
 | 
						|
             {
 | 
						|
              "table_id":-2,
 | 
						|
              "is_join":false
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "start_with": [
 | 
						|
          ],
 | 
						|
          "connect_by": [
 | 
						|
          ],
 | 
						|
          "where": [
 | 
						|
          ],
 | 
						|
          "group_by": [
 | 
						|
          ],
 | 
						|
          "having": [
 | 
						|
          ],
 | 
						|
          "aggr_func": [
 | 
						|
          ],
 | 
						|
          "order_by": [
 | 
						|
          ],
 | 
						|
          "limit":null,
 | 
						|
          "offset":null,
 | 
						|
          "show_stmt_ctx": {
 | 
						|
            "is_from_show_stmt":false,
 | 
						|
            "global_scope":false,
 | 
						|
            "tenant_id":-1,
 | 
						|
            "show_database_id":-1,
 | 
						|
            "show_table_id":-1,
 | 
						|
            "grants_user_id":-1
 | 
						|
          },
 | 
						|
          "hint": {
 | 
						|
            "read_static":false,
 | 
						|
            "no_rewrite":false,
 | 
						|
            "frozen_version":-1,
 | 
						|
            "topk_precision":-1,
 | 
						|
            "sharding_minimum_row_count":0,
 | 
						|
            "query_timeout":-1,
 | 
						|
            "hotspot":false,
 | 
						|
            "index": [
 | 
						|
            ],
 | 
						|
            "read_consistency":-1,
 | 
						|
            "join_ordered":false,
 | 
						|
            "join_order": [
 | 
						|
            ],
 | 
						|
            "merge_hint_ids": [
 | 
						|
            ],
 | 
						|
            "hash_hint_ids": [
 | 
						|
            ],
 | 
						|
            "no_hash_hint_ids": [
 | 
						|
            ],
 | 
						|
            "nl_hint_ids": [
 | 
						|
            ],
 | 
						|
            "part_hints": [
 | 
						|
            ],
 | 
						|
            "use_late_materialization":-1,
 | 
						|
            "log_level":"",
 | 
						|
            "max_concurrent":-1,
 | 
						|
            "only_concurrent_hint":false,
 | 
						|
            "has_hint_exclude_concurrent":false,
 | 
						|
            "parallel":-1,
 | 
						|
            "use_px":2,
 | 
						|
            "use join filter":false,
 | 
						|
            "org_pq_distributes": [
 | 
						|
            ],
 | 
						|
            "pq_distributes": [
 | 
						|
            ]
 | 
						|
          },
 | 
						|
          "query_context": {
 | 
						|
            "param_num":0,
 | 
						|
            "fetch_cur_time":true,
 | 
						|
            "calculable_items": [
 | 
						|
            ]
 | 
						|
          },
 | 
						|
          "extra_output_exprs": [
 | 
						|
          ],
 | 
						|
          "current_level":2,
 | 
						|
          "equal_sets": [
 | 
						|
          ],
 | 
						|
          "pseudo_column_exprs": [
 | 
						|
          ],
 | 
						|
          "child_stmts": [
 | 
						|
          ],
 | 
						|
          "has_transformed_for_hierarchical_query":false,
 | 
						|
          "is_hierarchical_query":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 19   ***************
 | 
						|
select (select c1 from t1) from t1;
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_QUERY",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_SUB_QUERY",
 | 
						|
          "CNT_SUB_QUERY"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
        ],
 | 
						|
        "id":0,
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "output_column":1,
 | 
						|
        "is_set":false,
 | 
						|
        "column_types": [
 | 
						|
           {
 | 
						|
            "meta": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":11,
 | 
						|
              "scale":0
 | 
						|
            },
 | 
						|
            "flag":16387,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          }
 | 
						|
        ],
 | 
						|
        "enum_set_values": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"(select c1 from t1)",
 | 
						|
      "expr_name":"(select c1 from t1)",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "rollup":false,
 | 
						|
  "nocycle":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "is_join":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "start_with": [
 | 
						|
  ],
 | 
						|
  "connect_by": [
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
  "show_stmt_ctx": {
 | 
						|
    "is_from_show_stmt":false,
 | 
						|
    "global_scope":false,
 | 
						|
    "tenant_id":-1,
 | 
						|
    "show_database_id":-1,
 | 
						|
    "show_table_id":-1,
 | 
						|
    "grants_user_id":-1
 | 
						|
  },
 | 
						|
  "hint": {
 | 
						|
    "read_static":false,
 | 
						|
    "no_rewrite":false,
 | 
						|
    "frozen_version":-1,
 | 
						|
    "topk_precision":-1,
 | 
						|
    "sharding_minimum_row_count":0,
 | 
						|
    "query_timeout":-1,
 | 
						|
    "hotspot":false,
 | 
						|
    "index": [
 | 
						|
    ],
 | 
						|
    "read_consistency":-1,
 | 
						|
    "join_ordered":false,
 | 
						|
    "join_order": [
 | 
						|
    ],
 | 
						|
    "merge_hint_ids": [
 | 
						|
    ],
 | 
						|
    "hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "no_hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "nl_hint_ids": [
 | 
						|
    ],
 | 
						|
    "part_hints": [
 | 
						|
    ],
 | 
						|
    "use_late_materialization":-1,
 | 
						|
    "log_level":"",
 | 
						|
    "max_concurrent":-1,
 | 
						|
    "only_concurrent_hint":false,
 | 
						|
    "has_hint_exclude_concurrent":false,
 | 
						|
    "parallel":-1,
 | 
						|
    "use_px":2,
 | 
						|
    "use join filter":false,
 | 
						|
    "org_pq_distributes": [
 | 
						|
    ],
 | 
						|
    "pq_distributes": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "query_context": {
 | 
						|
    "param_num":0,
 | 
						|
    "fetch_cur_time":true,
 | 
						|
    "calculable_items": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "extra_output_exprs": [
 | 
						|
  ],
 | 
						|
  "current_level":0,
 | 
						|
  "equal_sets": [
 | 
						|
  ],
 | 
						|
  "pseudo_column_exprs": [
 | 
						|
  ],
 | 
						|
  "child_stmts": [
 | 
						|
     {
 | 
						|
      "stmt_type":1,
 | 
						|
      "table": [
 | 
						|
         {
 | 
						|
          "table_id":-2,
 | 
						|
          "table_name":"t1",
 | 
						|
          "alias_name":"t1",
 | 
						|
          "synonym_name":"",
 | 
						|
          "table_type":1,
 | 
						|
          "ref_id":1099511677877,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "for_update":false,
 | 
						|
          "wait":-1,
 | 
						|
          "mock_id":-1,
 | 
						|
          "view_base_item":-1
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "joined_table": [
 | 
						|
      ],
 | 
						|
      "partition_express": [
 | 
						|
      ],
 | 
						|
      "column": [
 | 
						|
         {
 | 
						|
          "column_id":16,
 | 
						|
          "table_id":-2,
 | 
						|
          "column":"c1",
 | 
						|
          "auto_filled_timestamp":false,
 | 
						|
          "default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "base_tid":1099511677877,
 | 
						|
          "base_cid":16,
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":-2,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t1",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "select": [
 | 
						|
         {
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":-2,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t1",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          },
 | 
						|
          "is_alias":false,
 | 
						|
          "alias_name":"c1",
 | 
						|
          "expr_name":"c1",
 | 
						|
          "default": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "distinct":false,
 | 
						|
      "rollup":false,
 | 
						|
      "nocycle":false,
 | 
						|
      "from": [
 | 
						|
         {
 | 
						|
          "table_id":-2,
 | 
						|
          "is_join":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 20   ***************
 | 
						|
select c1 from t1 where c1 in (select c1 from t2 where c2 >= some(select max(c1) from (select c1 from t3 where t1.c2=t3.c1 order by c1 limit 1) as tt));
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c2",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
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						|
            "tenant_id":-1,
 | 
						|
            "show_database_id":-1,
 | 
						|
            "show_table_id":-1,
 | 
						|
            "grants_user_id":-1
 | 
						|
          },
 | 
						|
          "hint": {
 | 
						|
            "read_static":false,
 | 
						|
            "no_rewrite":false,
 | 
						|
            "frozen_version":-1,
 | 
						|
            "topk_precision":-1,
 | 
						|
            "sharding_minimum_row_count":0,
 | 
						|
            "query_timeout":-1,
 | 
						|
            "hotspot":false,
 | 
						|
            "index": [
 | 
						|
            ],
 | 
						|
            "read_consistency":-1,
 | 
						|
            "join_ordered":false,
 | 
						|
            "join_order": [
 | 
						|
            ],
 | 
						|
            "merge_hint_ids": [
 | 
						|
            ],
 | 
						|
            "hash_hint_ids": [
 | 
						|
            ],
 | 
						|
            "no_hash_hint_ids": [
 | 
						|
            ],
 | 
						|
            "nl_hint_ids": [
 | 
						|
            ],
 | 
						|
            "part_hints": [
 | 
						|
            ],
 | 
						|
            "use_late_materialization":-1,
 | 
						|
            "log_level":"",
 | 
						|
            "max_concurrent":-1,
 | 
						|
            "only_concurrent_hint":false,
 | 
						|
            "has_hint_exclude_concurrent":false,
 | 
						|
            "parallel":-1,
 | 
						|
            "use_px":2,
 | 
						|
            "use join filter":false,
 | 
						|
            "org_pq_distributes": [
 | 
						|
            ],
 | 
						|
            "pq_distributes": [
 | 
						|
            ]
 | 
						|
          },
 | 
						|
          "query_context": {
 | 
						|
            "param_num":0,
 | 
						|
            "fetch_cur_time":true,
 | 
						|
            "calculable_items": [
 | 
						|
            ]
 | 
						|
          },
 | 
						|
          "extra_output_exprs": [
 | 
						|
          ],
 | 
						|
          "current_level":2,
 | 
						|
          "equal_sets": [
 | 
						|
          ],
 | 
						|
          "pseudo_column_exprs": [
 | 
						|
          ],
 | 
						|
          "child_stmts": [
 | 
						|
             {
 | 
						|
              "stmt_type":1,
 | 
						|
              "table": [
 | 
						|
                 {
 | 
						|
                  "table_id":1099511677879,
 | 
						|
                  "table_name":"t3",
 | 
						|
                  "alias_name":"",
 | 
						|
                  "synonym_name":"",
 | 
						|
                  "table_type":0,
 | 
						|
                  "ref_id":1099511677879,
 | 
						|
                  "database_name":"subquery_db",
 | 
						|
                  "for_update":false,
 | 
						|
                  "wait":-1,
 | 
						|
                  "mock_id":-1,
 | 
						|
                  "view_base_item":-1
 | 
						|
                }
 | 
						|
              ],
 | 
						|
              "joined_table": [
 | 
						|
              ],
 | 
						|
              "partition_express": [
 | 
						|
              ],
 | 
						|
              "column": [
 | 
						|
                 {
 | 
						|
                  "column_id":16,
 | 
						|
                  "table_id":1099511677879,
 | 
						|
                  "column":"c1",
 | 
						|
                  "auto_filled_timestamp":false,
 | 
						|
                  "default_value": {
 | 
						|
                    "NULL":"NULL"
 | 
						|
                  },
 | 
						|
                  "base_tid":1099511677879,
 | 
						|
                  "base_cid":16,
 | 
						|
                  "expression": {
 | 
						|
                    "item_type":"T_REF_COLUMN",
 | 
						|
                    "result_type": {
 | 
						|
                      "meta": {
 | 
						|
                        "type":"INT",
 | 
						|
                        "collation":"binary",
 | 
						|
                        "coercibility":"NUMERIC"
 | 
						|
                      },
 | 
						|
                      "accuracy": {
 | 
						|
                        "length":-1,
 | 
						|
                        "precision":11,
 | 
						|
                        "scale":0
 | 
						|
                      },
 | 
						|
                      "flag":0,
 | 
						|
                      "calc_type": {
 | 
						|
                        "type":"NULL",
 | 
						|
                        "collation":"invalid_type",
 | 
						|
                        "coercibility":"INVALID"
 | 
						|
                      }
 | 
						|
                    },
 | 
						|
                    "expr_info": [
 | 
						|
                      "IS_COLUMN",
 | 
						|
                      "CNT_COLUMN"
 | 
						|
                    ],
 | 
						|
                    "rel_id": [
 | 
						|
                      1
 | 
						|
                    ],
 | 
						|
                    "table_id":1099511677879,
 | 
						|
                    "column_id":16,
 | 
						|
                    "database_name":"subquery_db",
 | 
						|
                    "table_name":"t3",
 | 
						|
                    "synonym_name":"",
 | 
						|
                    "column_name":"c1",
 | 
						|
                    "expr_level":2,
 | 
						|
                    "expr_levels": [
 | 
						|
                      2
 | 
						|
                    ],
 | 
						|
                    "column_flags":0,
 | 
						|
                    "is_explicited_referece":true,
 | 
						|
                    "explicited_ref_count":3,
 | 
						|
                    "enum_set_values": [
 | 
						|
                    ],
 | 
						|
                    "is_lob_column":false
 | 
						|
                  }
 | 
						|
                }
 | 
						|
              ],
 | 
						|
              "select": [
 | 
						|
                 {
 | 
						|
                  "expression": {
 | 
						|
                    "item_type":"T_REF_COLUMN",
 | 
						|
                    "result_type": {
 | 
						|
                      "meta": {
 | 
						|
                        "type":"INT",
 | 
						|
                        "collation":"binary",
 | 
						|
                        "coercibility":"NUMERIC"
 | 
						|
                      },
 | 
						|
                      "accuracy": {
 | 
						|
                        "length":-1,
 | 
						|
                        "precision":11,
 | 
						|
                        "scale":0
 | 
						|
                      },
 | 
						|
                      "flag":0,
 | 
						|
                      "calc_type": {
 | 
						|
                        "type":"NULL",
 | 
						|
                        "collation":"invalid_type",
 | 
						|
                        "coercibility":"INVALID"
 | 
						|
                      }
 | 
						|
                    },
 | 
						|
                    "expr_info": [
 | 
						|
                      "IS_COLUMN",
 | 
						|
                      "CNT_COLUMN"
 | 
						|
                    ],
 | 
						|
                    "rel_id": [
 | 
						|
                      1
 | 
						|
                    ],
 | 
						|
                    "table_id":1099511677879,
 | 
						|
                    "column_id":16,
 | 
						|
                    "database_name":"subquery_db",
 | 
						|
                    "table_name":"t3",
 | 
						|
                    "synonym_name":"",
 | 
						|
                    "column_name":"c1",
 | 
						|
                    "expr_level":2,
 | 
						|
                    "expr_levels": [
 | 
						|
                      2
 | 
						|
                    ],
 | 
						|
                    "column_flags":0,
 | 
						|
                    "is_explicited_referece":true,
 | 
						|
                    "explicited_ref_count":3,
 | 
						|
                    "enum_set_values": [
 | 
						|
                    ],
 | 
						|
                    "is_lob_column":false
 | 
						|
                  },
 | 
						|
                  "is_alias":false,
 | 
						|
                  "alias_name":"c1",
 | 
						|
                  "expr_name":"c1",
 | 
						|
                  "default": {
 | 
						|
                    "NULL":"NULL"
 | 
						|
                  }
 | 
						|
                }
 | 
						|
              ],
 | 
						|
              "distinct":false,
 | 
						|
              "rollup":false,
 | 
						|
              "nocycle":false,
 | 
						|
              "from": [
 | 
						|
                 {
 | 
						|
                  "table_id":1099511677879,
 | 
						|
                  "is_join":false
 | 
						|
                }
 | 
						|
              ],
 | 
						|
              "start_with": [
 | 
						|
              ],
 | 
						|
              "connect_by": [
 | 
						|
              ],
 | 
						|
              "where": [
 | 
						|
                 {
 | 
						|
                  "item_type":"T_OP_EQ",
 | 
						|
                  "result_type": {
 | 
						|
                    "meta": {
 | 
						|
                      "type":"INT",
 | 
						|
                      "collation":"binary",
 | 
						|
                      "coercibility":"NUMERIC"
 | 
						|
                    },
 | 
						|
                    "accuracy": {
 | 
						|
                      "length":-1,
 | 
						|
                      "precision":1,
 | 
						|
                      "scale":0
 | 
						|
                    },
 | 
						|
                    "flag":0,
 | 
						|
                    "calc_type": {
 | 
						|
                      "type":"INT",
 | 
						|
                      "collation":"binary",
 | 
						|
                      "coercibility":"NUMERIC"
 | 
						|
                    }
 | 
						|
                  },
 | 
						|
                  "expr_info": [
 | 
						|
                    "CNT_COLUMN",
 | 
						|
                    "IS_JOIN_COND"
 | 
						|
                  ],
 | 
						|
                  "rel_id": [
 | 
						|
                    1
 | 
						|
                  ],
 | 
						|
                  "expr_levels": [
 | 
						|
                    0,
 | 
						|
                    2
 | 
						|
                  ],
 | 
						|
                  "children": [
 | 
						|
                     {
 | 
						|
                      "item_type":"T_REF_COLUMN",
 | 
						|
                      "result_type": {
 | 
						|
                        "meta": {
 | 
						|
                          "type":"INT",
 | 
						|
                          "collation":"binary",
 | 
						|
                          "coercibility":"NUMERIC"
 | 
						|
                        },
 | 
						|
                        "accuracy": {
 | 
						|
                          "length":-1,
 | 
						|
                          "precision":11,
 | 
						|
                          "scale":0
 | 
						|
                        },
 | 
						|
                        "flag":0,
 | 
						|
                        "calc_type": {
 | 
						|
                          "type":"NULL",
 | 
						|
                          "collation":"invalid_type",
 | 
						|
                          "coercibility":"INVALID"
 | 
						|
                        }
 | 
						|
                      },
 | 
						|
                      "expr_info": [
 | 
						|
                        "IS_COLUMN",
 | 
						|
                        "CNT_COLUMN"
 | 
						|
                      ],
 | 
						|
                      "rel_id": [
 | 
						|
                        1
 | 
						|
                      ],
 | 
						|
                      "table_id":1099511677877,
 | 
						|
                      "column_id":17,
 | 
						|
                      "database_name":"subquery_db",
 | 
						|
                      "table_name":"t1",
 | 
						|
                      "synonym_name":"",
 | 
						|
                      "column_name":"c2",
 | 
						|
                      "expr_level":0,
 | 
						|
                      "expr_levels": [
 | 
						|
                        0
 | 
						|
                      ],
 | 
						|
                      "column_flags":0,
 | 
						|
                      "is_explicited_referece":true,
 | 
						|
                      "explicited_ref_count":1,
 | 
						|
                      "enum_set_values": [
 | 
						|
                      ],
 | 
						|
                      "is_lob_column":false
 | 
						|
                    },
 | 
						|
                     {
 | 
						|
                      "item_type":"T_REF_COLUMN",
 | 
						|
                      "result_type": {
 | 
						|
                        "meta": {
 | 
						|
                          "type":"INT",
 | 
						|
                          "collation":"binary",
 | 
						|
                          "coercibility":"NUMERIC"
 | 
						|
                        },
 | 
						|
                        "accuracy": {
 | 
						|
                          "length":-1,
 | 
						|
                          "precision":11,
 | 
						|
                          "scale":0
 | 
						|
                        },
 | 
						|
                        "flag":0,
 | 
						|
                        "calc_type": {
 | 
						|
                          "type":"NULL",
 | 
						|
                          "collation":"invalid_type",
 | 
						|
                          "coercibility":"INVALID"
 | 
						|
                        }
 | 
						|
                      },
 | 
						|
                      "expr_info": [
 | 
						|
                        "IS_COLUMN",
 | 
						|
                        "CNT_COLUMN"
 | 
						|
                      ],
 | 
						|
                      "rel_id": [
 | 
						|
                        1
 | 
						|
                      ],
 | 
						|
                      "table_id":1099511677879,
 | 
						|
                      "column_id":16,
 | 
						|
                      "database_name":"subquery_db",
 | 
						|
                      "table_name":"t3",
 | 
						|
                      "synonym_name":"",
 | 
						|
                      "column_name":"c1",
 | 
						|
                      "expr_level":2,
 | 
						|
                      "expr_levels": [
 | 
						|
                        2
 | 
						|
                      ],
 | 
						|
                      "column_flags":0,
 | 
						|
                      "is_explicited_referece":true,
 | 
						|
                      "explicited_ref_count":3,
 | 
						|
                      "enum_set_values": [
 | 
						|
                      ],
 | 
						|
                      "is_lob_column":false
 | 
						|
                    }
 | 
						|
                  ]
 | 
						|
                }
 | 
						|
              ],
 | 
						|
              "group_by": [
 | 
						|
              ],
 | 
						|
              "having": [
 | 
						|
              ],
 | 
						|
              "aggr_func": [
 | 
						|
              ],
 | 
						|
              "order_by": [
 | 
						|
                 {
 | 
						|
                  "expression": {
 | 
						|
                    "item_type":"T_REF_COLUMN",
 | 
						|
                    "result_type": {
 | 
						|
                      "meta": {
 | 
						|
                        "type":"INT",
 | 
						|
                        "collation":"binary",
 | 
						|
                        "coercibility":"NUMERIC"
 | 
						|
                      },
 | 
						|
                      "accuracy": {
 | 
						|
                        "length":-1,
 | 
						|
                        "precision":11,
 | 
						|
                        "scale":0
 | 
						|
                      },
 | 
						|
                      "flag":0,
 | 
						|
                      "calc_type": {
 | 
						|
                        "type":"NULL",
 | 
						|
                        "collation":"invalid_type",
 | 
						|
                        "coercibility":"INVALID"
 | 
						|
                      }
 | 
						|
                    },
 | 
						|
                    "expr_info": [
 | 
						|
                      "IS_COLUMN",
 | 
						|
                      "CNT_COLUMN"
 | 
						|
                    ],
 | 
						|
                    "rel_id": [
 | 
						|
                      1
 | 
						|
                    ],
 | 
						|
                    "table_id":1099511677879,
 | 
						|
                    "column_id":16,
 | 
						|
                    "database_name":"subquery_db",
 | 
						|
                    "table_name":"t3",
 | 
						|
                    "synonym_name":"",
 | 
						|
                    "column_name":"c1",
 | 
						|
                    "expr_level":2,
 | 
						|
                    "expr_levels": [
 | 
						|
                      2
 | 
						|
                    ],
 | 
						|
                    "column_flags":0,
 | 
						|
                    "is_explicited_referece":true,
 | 
						|
                    "explicited_ref_count":3,
 | 
						|
                    "enum_set_values": [
 | 
						|
                    ],
 | 
						|
                    "is_lob_column":false
 | 
						|
                  },
 | 
						|
                  "ascending":"ASC"
 | 
						|
                }
 | 
						|
              ],
 | 
						|
              "limit": {
 | 
						|
                "item_type":"T_INT",
 | 
						|
                "result_type": {
 | 
						|
                  "meta": {
 | 
						|
                    "type":"BIGINT",
 | 
						|
                    "collation":"binary",
 | 
						|
                    "coercibility":"NUMERIC"
 | 
						|
                  },
 | 
						|
                  "accuracy": {
 | 
						|
                    "length":1,
 | 
						|
                    "precision":1,
 | 
						|
                    "scale":0
 | 
						|
                  },
 | 
						|
                  "flag":1,
 | 
						|
                  "calc_type": {
 | 
						|
                    "type":"NULL",
 | 
						|
                    "collation":"invalid_type",
 | 
						|
                    "coercibility":"INVALID"
 | 
						|
                  }
 | 
						|
                },
 | 
						|
                "expr_info": [
 | 
						|
                  "IS_CONST",
 | 
						|
                  "CNT_CONST"
 | 
						|
                ],
 | 
						|
                "rel_id": [
 | 
						|
                ],
 | 
						|
                "value": {
 | 
						|
                  "BIGINT":1
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "offset":null,
 | 
						|
              "show_stmt_ctx": {
 | 
						|
                "is_from_show_stmt":false,
 | 
						|
                "global_scope":false,
 | 
						|
                "tenant_id":-1,
 | 
						|
                "show_database_id":-1,
 | 
						|
                "show_table_id":-1,
 | 
						|
                "grants_user_id":-1
 | 
						|
              },
 | 
						|
              "hint": {
 | 
						|
                "read_static":false,
 | 
						|
                "no_rewrite":false,
 | 
						|
                "frozen_version":-1,
 | 
						|
                "topk_precision":-1,
 | 
						|
                "sharding_minimum_row_count":0,
 | 
						|
                "query_timeout":-1,
 | 
						|
                "hotspot":false,
 | 
						|
                "index": [
 | 
						|
                ],
 | 
						|
                "read_consistency":-1,
 | 
						|
                "join_ordered":false,
 | 
						|
                "join_order": [
 | 
						|
                ],
 | 
						|
                "merge_hint_ids": [
 | 
						|
                ],
 | 
						|
                "hash_hint_ids": [
 | 
						|
                ],
 | 
						|
                "no_hash_hint_ids": [
 | 
						|
                ],
 | 
						|
                "nl_hint_ids": [
 | 
						|
                ],
 | 
						|
                "part_hints": [
 | 
						|
                ],
 | 
						|
                "use_late_materialization":-1,
 | 
						|
                "log_level":"",
 | 
						|
                "max_concurrent":-1,
 | 
						|
                "only_concurrent_hint":false,
 | 
						|
                "has_hint_exclude_concurrent":false,
 | 
						|
                "parallel":-1,
 | 
						|
                "use_px":2,
 | 
						|
                "use join filter":false,
 | 
						|
                "org_pq_distributes": [
 | 
						|
                ],
 | 
						|
                "pq_distributes": [
 | 
						|
                ]
 | 
						|
              },
 | 
						|
              "query_context": {
 | 
						|
                "param_num":0,
 | 
						|
                "fetch_cur_time":true,
 | 
						|
                "calculable_items": [
 | 
						|
                ]
 | 
						|
              },
 | 
						|
              "extra_output_exprs": [
 | 
						|
              ],
 | 
						|
              "current_level":2,
 | 
						|
              "equal_sets": [
 | 
						|
              ],
 | 
						|
              "pseudo_column_exprs": [
 | 
						|
              ],
 | 
						|
              "child_stmts": [
 | 
						|
              ],
 | 
						|
              "has_transformed_for_hierarchical_query":false,
 | 
						|
              "is_hierarchical_query":false
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "has_transformed_for_hierarchical_query":false,
 | 
						|
          "is_hierarchical_query":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 21   ***************
 | 
						|
select (select c1, c2 from t1) from t1;
 | 
						|
***************   Case 22   ***************
 | 
						|
select * from t1 group by (select c1 from t1);
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
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            "is_lob_column":false
 | 
						|
          },
 | 
						|
          "is_alias":false,
 | 
						|
          "alias_name":"c1",
 | 
						|
          "expr_name":"c1",
 | 
						|
          "default": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "distinct":false,
 | 
						|
      "rollup":false,
 | 
						|
      "nocycle":false,
 | 
						|
      "from": [
 | 
						|
         {
 | 
						|
          "table_id":-2,
 | 
						|
          "is_join":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 23   ***************
 | 
						|
select * from t1 group by (select c1, c2 from t1);
 | 
						|
***************   Case 24   ***************
 | 
						|
select * from t1 where (select c1 from t2) in (1, 2);
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c2",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c1",
 | 
						|
      "expr_name":"c1",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c2",
 | 
						|
      "expr_name":"c2",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "rollup":false,
 | 
						|
  "nocycle":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "is_join":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "start_with": [
 | 
						|
  ],
 | 
						|
  "connect_by": [
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
     {
 | 
						|
      "item_type":"T_OP_IN",
 | 
						|
      "result_type": {
 | 
						|
        "meta": {
 | 
						|
          "type":"BIGINT",
 | 
						|
          "collation":"binary",
 | 
						|
          "coercibility":"NUMERIC"
 | 
						|
        },
 | 
						|
        "accuracy": {
 | 
						|
          "length":-1,
 | 
						|
          "precision":1,
 | 
						|
          "scale":0
 | 
						|
        },
 | 
						|
        "flag":1,
 | 
						|
        "calc_type": {
 | 
						|
          "type":"NULL",
 | 
						|
          "collation":"invalid_type",
 | 
						|
          "coercibility":"INVALID"
 | 
						|
        }
 | 
						|
      },
 | 
						|
      "expr_info": [
 | 
						|
        "IS_IN",
 | 
						|
        "CNT_CONST_EXPR",
 | 
						|
        "CNT_CONST",
 | 
						|
        "CNT_PARAM",
 | 
						|
        "CNT_IN",
 | 
						|
        "CNT_SUB_QUERY"
 | 
						|
      ],
 | 
						|
      "rel_id": [
 | 
						|
      ],
 | 
						|
      "expr_levels": [
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "children": [
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_QUERY",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":11,
 | 
						|
              "scale":0
 | 
						|
            },
 | 
						|
            "flag":16387,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_SUB_QUERY",
 | 
						|
            "CNT_SUB_QUERY"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
          ],
 | 
						|
          "id":0,
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "output_column":1,
 | 
						|
          "is_set":false,
 | 
						|
          "column_types": [
 | 
						|
             {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "enum_set_values": [
 | 
						|
          ]
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "item_type":"T_OP_ROW",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":-1,
 | 
						|
              "scale":-1
 | 
						|
            },
 | 
						|
            "flag":0,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_CONST_EXPR",
 | 
						|
            "CNT_CONST",
 | 
						|
            "CNT_PARAM"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
          ],
 | 
						|
          "expr_levels": [
 | 
						|
          ],
 | 
						|
          "children": [
 | 
						|
             {
 | 
						|
              "item_type":"T_QUESTIONMARK",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"BIGINT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":1,
 | 
						|
                  "precision":1,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":1,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_CONST",
 | 
						|
                "IS_PARAM",
 | 
						|
                "CNT_CONST",
 | 
						|
                "CNT_PARAM"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
              ],
 | 
						|
              "value": {
 | 
						|
                "UNKNOWN":0
 | 
						|
              }
 | 
						|
            },
 | 
						|
             {
 | 
						|
              "item_type":"T_QUESTIONMARK",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"BIGINT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":1,
 | 
						|
                  "precision":1,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":1,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_CONST",
 | 
						|
                "IS_PARAM",
 | 
						|
                "CNT_CONST",
 | 
						|
                "CNT_PARAM"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
              ],
 | 
						|
              "value": {
 | 
						|
                "UNKNOWN":1
 | 
						|
              }
 | 
						|
            }
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ]
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
  "show_stmt_ctx": {
 | 
						|
    "is_from_show_stmt":false,
 | 
						|
    "global_scope":false,
 | 
						|
    "tenant_id":-1,
 | 
						|
    "show_database_id":-1,
 | 
						|
    "show_table_id":-1,
 | 
						|
    "grants_user_id":-1
 | 
						|
  },
 | 
						|
  "hint": {
 | 
						|
    "read_static":false,
 | 
						|
    "no_rewrite":false,
 | 
						|
    "frozen_version":-1,
 | 
						|
    "topk_precision":-1,
 | 
						|
    "sharding_minimum_row_count":0,
 | 
						|
    "query_timeout":-1,
 | 
						|
    "hotspot":false,
 | 
						|
    "index": [
 | 
						|
    ],
 | 
						|
    "read_consistency":-1,
 | 
						|
    "join_ordered":false,
 | 
						|
    "join_order": [
 | 
						|
    ],
 | 
						|
    "merge_hint_ids": [
 | 
						|
    ],
 | 
						|
    "hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "no_hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "nl_hint_ids": [
 | 
						|
    ],
 | 
						|
    "part_hints": [
 | 
						|
    ],
 | 
						|
    "use_late_materialization":-1,
 | 
						|
    "log_level":"",
 | 
						|
    "max_concurrent":-1,
 | 
						|
    "only_concurrent_hint":false,
 | 
						|
    "has_hint_exclude_concurrent":false,
 | 
						|
    "parallel":-1,
 | 
						|
    "use_px":2,
 | 
						|
    "use join filter":false,
 | 
						|
    "org_pq_distributes": [
 | 
						|
    ],
 | 
						|
    "pq_distributes": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "query_context": {
 | 
						|
    "param_num":2,
 | 
						|
    "fetch_cur_time":true,
 | 
						|
    "calculable_items": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "extra_output_exprs": [
 | 
						|
  ],
 | 
						|
  "current_level":0,
 | 
						|
  "equal_sets": [
 | 
						|
  ],
 | 
						|
  "pseudo_column_exprs": [
 | 
						|
  ],
 | 
						|
  "child_stmts": [
 | 
						|
     {
 | 
						|
      "stmt_type":1,
 | 
						|
      "table": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "table_name":"t2",
 | 
						|
          "alias_name":"",
 | 
						|
          "synonym_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511677878,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "for_update":false,
 | 
						|
          "wait":-1,
 | 
						|
          "mock_id":-1,
 | 
						|
          "view_base_item":-1
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "joined_table": [
 | 
						|
      ],
 | 
						|
      "partition_express": [
 | 
						|
      ],
 | 
						|
      "column": [
 | 
						|
         {
 | 
						|
          "column_id":16,
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "column":"c1",
 | 
						|
          "auto_filled_timestamp":false,
 | 
						|
          "default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "base_tid":1099511677878,
 | 
						|
          "base_cid":16,
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "select": [
 | 
						|
         {
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":16,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c1",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          },
 | 
						|
          "is_alias":false,
 | 
						|
          "alias_name":"c1",
 | 
						|
          "expr_name":"c1",
 | 
						|
          "default": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "distinct":false,
 | 
						|
      "rollup":false,
 | 
						|
      "nocycle":false,
 | 
						|
      "from": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "is_join":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":2,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 25   ***************
 | 
						|
select * from t1 where c1=ANY(select c1 from t2 where t1.c2>t2.c2);
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c2",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
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      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
         {
 | 
						|
          "item_type":"T_OP_GT",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":1,
 | 
						|
              "scale":0
 | 
						|
            },
 | 
						|
            "flag":0,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "CNT_COLUMN"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "expr_levels": [
 | 
						|
            0,
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "children": [
 | 
						|
             {
 | 
						|
              "item_type":"T_REF_COLUMN",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"INT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":-1,
 | 
						|
                  "precision":11,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":0,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_COLUMN",
 | 
						|
                "CNT_COLUMN"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "table_id":1099511677877,
 | 
						|
              "column_id":17,
 | 
						|
              "database_name":"subquery_db",
 | 
						|
              "table_name":"t1",
 | 
						|
              "synonym_name":"",
 | 
						|
              "column_name":"c2",
 | 
						|
              "expr_level":0,
 | 
						|
              "expr_levels": [
 | 
						|
                0
 | 
						|
              ],
 | 
						|
              "column_flags":0,
 | 
						|
              "is_explicited_referece":true,
 | 
						|
              "explicited_ref_count":2,
 | 
						|
              "enum_set_values": [
 | 
						|
              ],
 | 
						|
              "is_lob_column":false
 | 
						|
            },
 | 
						|
             {
 | 
						|
              "item_type":"T_REF_COLUMN",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"INT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":-1,
 | 
						|
                  "precision":11,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":0,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_COLUMN",
 | 
						|
                "CNT_COLUMN"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "table_id":1099511677878,
 | 
						|
              "column_id":17,
 | 
						|
              "database_name":"subquery_db",
 | 
						|
              "table_name":"t2",
 | 
						|
              "synonym_name":"",
 | 
						|
              "column_name":"c2",
 | 
						|
              "expr_level":1,
 | 
						|
              "expr_levels": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "column_flags":0,
 | 
						|
              "is_explicited_referece":true,
 | 
						|
              "explicited_ref_count":1,
 | 
						|
              "enum_set_values": [
 | 
						|
              ],
 | 
						|
              "is_lob_column":false
 | 
						|
            }
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 26   ***************
 | 
						|
select * from t1, (select * from t2) as v where exists(select c2 from t2 where t2.c1 = t1.c1);
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "table_id":-2,
 | 
						|
      "table_name":"v",
 | 
						|
      "alias_name":"v",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":2,
 | 
						|
      "ref_id":-1,
 | 
						|
      "database_name":"",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c2",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":-2,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677878,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":-2,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"",
 | 
						|
        "table_name":"v",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "table_id":-2,
 | 
						|
      "column":"c2",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677878,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":-2,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"",
 | 
						|
        "table_name":"v",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":18,
 | 
						|
      "table_id":-2,
 | 
						|
      "column":"c3",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677878,
 | 
						|
      "base_cid":18,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"VARCHAR",
 | 
						|
            "collation":"utf8mb4_general_ci",
 | 
						|
            "coercibility":"IMPLICIT"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":32,
 | 
						|
            "precision":-1,
 | 
						|
            "scale":-1
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
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                "scale":0
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":-3,
 | 
						|
            "column_id":17,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c2",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "select": [
 | 
						|
         {
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":-3,
 | 
						|
            "column_id":17,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c2",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          },
 | 
						|
          "is_alias":false,
 | 
						|
          "alias_name":"c2",
 | 
						|
          "expr_name":"c2",
 | 
						|
          "default": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          }
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "distinct":false,
 | 
						|
      "rollup":false,
 | 
						|
      "nocycle":false,
 | 
						|
      "from": [
 | 
						|
         {
 | 
						|
          "table_id":-3,
 | 
						|
          "is_join":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "start_with": [
 | 
						|
      ],
 | 
						|
      "connect_by": [
 | 
						|
      ],
 | 
						|
      "where": [
 | 
						|
         {
 | 
						|
          "item_type":"T_OP_EQ",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":1,
 | 
						|
              "scale":0
 | 
						|
            },
 | 
						|
            "flag":1,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "CNT_COLUMN",
 | 
						|
            "IS_JOIN_COND"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "expr_levels": [
 | 
						|
            0,
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "children": [
 | 
						|
             {
 | 
						|
              "item_type":"T_REF_COLUMN",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"INT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":-1,
 | 
						|
                  "precision":11,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":16387,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_COLUMN",
 | 
						|
                "CNT_COLUMN"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "table_id":-3,
 | 
						|
              "column_id":16,
 | 
						|
              "database_name":"subquery_db",
 | 
						|
              "table_name":"t2",
 | 
						|
              "synonym_name":"",
 | 
						|
              "column_name":"c1",
 | 
						|
              "expr_level":1,
 | 
						|
              "expr_levels": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "column_flags":0,
 | 
						|
              "is_explicited_referece":true,
 | 
						|
              "explicited_ref_count":1,
 | 
						|
              "enum_set_values": [
 | 
						|
              ],
 | 
						|
              "is_lob_column":false
 | 
						|
            },
 | 
						|
             {
 | 
						|
              "item_type":"T_REF_COLUMN",
 | 
						|
              "result_type": {
 | 
						|
                "meta": {
 | 
						|
                  "type":"INT",
 | 
						|
                  "collation":"binary",
 | 
						|
                  "coercibility":"NUMERIC"
 | 
						|
                },
 | 
						|
                "accuracy": {
 | 
						|
                  "length":-1,
 | 
						|
                  "precision":11,
 | 
						|
                  "scale":0
 | 
						|
                },
 | 
						|
                "flag":16387,
 | 
						|
                "calc_type": {
 | 
						|
                  "type":"NULL",
 | 
						|
                  "collation":"invalid_type",
 | 
						|
                  "coercibility":"INVALID"
 | 
						|
                }
 | 
						|
              },
 | 
						|
              "expr_info": [
 | 
						|
                "IS_COLUMN",
 | 
						|
                "CNT_COLUMN"
 | 
						|
              ],
 | 
						|
              "rel_id": [
 | 
						|
                1
 | 
						|
              ],
 | 
						|
              "table_id":1099511677877,
 | 
						|
              "column_id":16,
 | 
						|
              "database_name":"subquery_db",
 | 
						|
              "table_name":"t1",
 | 
						|
              "synonym_name":"",
 | 
						|
              "column_name":"c1",
 | 
						|
              "expr_level":0,
 | 
						|
              "expr_levels": [
 | 
						|
                0
 | 
						|
              ],
 | 
						|
              "column_flags":0,
 | 
						|
              "is_explicited_referece":true,
 | 
						|
              "explicited_ref_count":2,
 | 
						|
              "enum_set_values": [
 | 
						|
              ],
 | 
						|
              "is_lob_column":false
 | 
						|
            }
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "group_by": [
 | 
						|
      ],
 | 
						|
      "having": [
 | 
						|
      ],
 | 
						|
      "aggr_func": [
 | 
						|
      ],
 | 
						|
      "order_by": [
 | 
						|
      ],
 | 
						|
      "limit":null,
 | 
						|
      "offset":null,
 | 
						|
      "show_stmt_ctx": {
 | 
						|
        "is_from_show_stmt":false,
 | 
						|
        "global_scope":false,
 | 
						|
        "tenant_id":-1,
 | 
						|
        "show_database_id":-1,
 | 
						|
        "show_table_id":-1,
 | 
						|
        "grants_user_id":-1
 | 
						|
      },
 | 
						|
      "hint": {
 | 
						|
        "read_static":false,
 | 
						|
        "no_rewrite":false,
 | 
						|
        "frozen_version":-1,
 | 
						|
        "topk_precision":-1,
 | 
						|
        "sharding_minimum_row_count":0,
 | 
						|
        "query_timeout":-1,
 | 
						|
        "hotspot":false,
 | 
						|
        "index": [
 | 
						|
        ],
 | 
						|
        "read_consistency":-1,
 | 
						|
        "join_ordered":false,
 | 
						|
        "join_order": [
 | 
						|
        ],
 | 
						|
        "merge_hint_ids": [
 | 
						|
        ],
 | 
						|
        "hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "no_hash_hint_ids": [
 | 
						|
        ],
 | 
						|
        "nl_hint_ids": [
 | 
						|
        ],
 | 
						|
        "part_hints": [
 | 
						|
        ],
 | 
						|
        "use_late_materialization":-1,
 | 
						|
        "log_level":"",
 | 
						|
        "max_concurrent":-1,
 | 
						|
        "only_concurrent_hint":false,
 | 
						|
        "has_hint_exclude_concurrent":false,
 | 
						|
        "parallel":-1,
 | 
						|
        "use_px":2,
 | 
						|
        "use join filter":false,
 | 
						|
        "org_pq_distributes": [
 | 
						|
        ],
 | 
						|
        "pq_distributes": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "query_context": {
 | 
						|
        "param_num":0,
 | 
						|
        "fetch_cur_time":true,
 | 
						|
        "calculable_items": [
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "extra_output_exprs": [
 | 
						|
      ],
 | 
						|
      "current_level":1,
 | 
						|
      "equal_sets": [
 | 
						|
      ],
 | 
						|
      "pseudo_column_exprs": [
 | 
						|
      ],
 | 
						|
      "child_stmts": [
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 27   ***************
 | 
						|
(select substr('a',1,1) ) union (select 1);
 | 
						|
{
 | 
						|
  "set_op":1,
 | 
						|
  "distinct":true,
 | 
						|
  "left_query": {
 | 
						|
    "stmt_type":1,
 | 
						|
    "table": [
 | 
						|
    ],
 | 
						|
    "joined_table": [
 | 
						|
    ],
 | 
						|
    "partition_express": [
 | 
						|
    ],
 | 
						|
    "column": [
 | 
						|
    ],
 | 
						|
    "select": [
 | 
						|
       {
 | 
						|
        "expression": {
 | 
						|
          "item_type":"T_QUESTIONMARK",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"VARCHAR",
 | 
						|
              "collation":"utf8mb4_general_ci",
 | 
						|
              "coercibility":"IMPLICIT"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":20,
 | 
						|
              "precision":-1,
 | 
						|
              "scale":-1
 | 
						|
            },
 | 
						|
            "flag":0,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_CONST",
 | 
						|
            "IS_PARAM",
 | 
						|
            "CNT_CONST",
 | 
						|
            "CNT_PARAM",
 | 
						|
            "IS_EXEC_PARM"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
          ],
 | 
						|
          "value": {
 | 
						|
            "UNKNOWN":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "is_alias":false,
 | 
						|
        "alias_name":"substr('a',1,1)",
 | 
						|
        "expr_name":"substr('a',1,1)",
 | 
						|
        "default": {
 | 
						|
          "NULL":"NULL"
 | 
						|
        }
 | 
						|
      }
 | 
						|
    ],
 | 
						|
    "distinct":false,
 | 
						|
    "rollup":false,
 | 
						|
    "nocycle":false,
 | 
						|
    "from": [
 | 
						|
    ],
 | 
						|
    "start_with": [
 | 
						|
    ],
 | 
						|
    "connect_by": [
 | 
						|
    ],
 | 
						|
    "where": [
 | 
						|
    ],
 | 
						|
    "group_by": [
 | 
						|
    ],
 | 
						|
    "having": [
 | 
						|
    ],
 | 
						|
    "aggr_func": [
 | 
						|
    ],
 | 
						|
    "order_by": [
 | 
						|
    ],
 | 
						|
    "limit":null,
 | 
						|
    "offset":null,
 | 
						|
    "show_stmt_ctx": {
 | 
						|
      "is_from_show_stmt":false,
 | 
						|
      "global_scope":false,
 | 
						|
      "tenant_id":-1,
 | 
						|
      "show_database_id":-1,
 | 
						|
      "show_table_id":-1,
 | 
						|
      "grants_user_id":-1
 | 
						|
    },
 | 
						|
    "hint": {
 | 
						|
      "read_static":false,
 | 
						|
      "no_rewrite":false,
 | 
						|
      "frozen_version":-1,
 | 
						|
      "topk_precision":-1,
 | 
						|
      "sharding_minimum_row_count":0,
 | 
						|
      "query_timeout":-1,
 | 
						|
      "hotspot":false,
 | 
						|
      "index": [
 | 
						|
      ],
 | 
						|
      "read_consistency":-1,
 | 
						|
      "join_ordered":false,
 | 
						|
      "join_order": [
 | 
						|
      ],
 | 
						|
      "merge_hint_ids": [
 | 
						|
      ],
 | 
						|
      "hash_hint_ids": [
 | 
						|
      ],
 | 
						|
      "no_hash_hint_ids": [
 | 
						|
      ],
 | 
						|
      "nl_hint_ids": [
 | 
						|
      ],
 | 
						|
      "part_hints": [
 | 
						|
      ],
 | 
						|
      "use_late_materialization":-1,
 | 
						|
      "log_level":"",
 | 
						|
      "max_concurrent":-1,
 | 
						|
      "only_concurrent_hint":false,
 | 
						|
      "has_hint_exclude_concurrent":false,
 | 
						|
      "parallel":-1,
 | 
						|
      "use_px":2,
 | 
						|
      "use join filter":false,
 | 
						|
      "org_pq_distributes": [
 | 
						|
      ],
 | 
						|
      "pq_distributes": [
 | 
						|
      ]
 | 
						|
    },
 | 
						|
    "query_context": {
 | 
						|
      "param_num":2,
 | 
						|
      "fetch_cur_time":true,
 | 
						|
      "calculable_items": [
 | 
						|
         {
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_FUN_SYS_CAST",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"VARCHAR",
 | 
						|
                "collation":"utf8mb4_general_ci",
 | 
						|
                "coercibility":"IMPLICIT"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":20,
 | 
						|
                "precision":-1,
 | 
						|
                "scale":-1
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_CONST",
 | 
						|
              "IS_FUNC",
 | 
						|
              "IS_CALCULABLE_EXPR",
 | 
						|
              "IS_CONST_EXPR",
 | 
						|
              "CNT_CONST",
 | 
						|
              "CNT_FUNC",
 | 
						|
              "CNT_CALCULABLE_EXPR"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
            ],
 | 
						|
            "expr_levels": [
 | 
						|
            ],
 | 
						|
            "func":"cast",
 | 
						|
            "children": [
 | 
						|
               {
 | 
						|
                "item_type":"T_FUN_SYS_SUBSTR",
 | 
						|
                "result_type": {
 | 
						|
                  "meta": {
 | 
						|
                    "type":"VARCHAR",
 | 
						|
                    "collation":"utf8mb4_general_ci",
 | 
						|
                    "coercibility":"COERCIBLE"
 | 
						|
                  },
 | 
						|
                  "accuracy": {
 | 
						|
                    "length":1,
 | 
						|
                    "precision":-1,
 | 
						|
                    "scale":-1
 | 
						|
                  },
 | 
						|
                  "flag":0,
 | 
						|
                  "calc_type": {
 | 
						|
                    "type":"NULL",
 | 
						|
                    "collation":"invalid_type",
 | 
						|
                    "coercibility":"INVALID"
 | 
						|
                  }
 | 
						|
                },
 | 
						|
                "expr_info": [
 | 
						|
                  "IS_CONST",
 | 
						|
                  "IS_FUNC",
 | 
						|
                  "IS_CALCULABLE_EXPR",
 | 
						|
                  "IS_CONST_EXPR",
 | 
						|
                  "CNT_CONST",
 | 
						|
                  "CNT_FUNC",
 | 
						|
                  "CNT_CALCULABLE_EXPR"
 | 
						|
                ],
 | 
						|
                "rel_id": [
 | 
						|
                ],
 | 
						|
                "expr_levels": [
 | 
						|
                ],
 | 
						|
                "func":"substr",
 | 
						|
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                      "flag":1,
 | 
						|
                      "calc_type": {
 | 
						|
                        "type":"NULL",
 | 
						|
                        "collation":"invalid_type",
 | 
						|
                        "coercibility":"INVALID"
 | 
						|
                      }
 | 
						|
                    },
 | 
						|
                    "expr_info": [
 | 
						|
                      "IS_CONST",
 | 
						|
                      "CNT_CONST"
 | 
						|
                    ],
 | 
						|
                    "rel_id": [
 | 
						|
                    ],
 | 
						|
                    "value": {
 | 
						|
                      "BIGINT":1
 | 
						|
                    }
 | 
						|
                  }
 | 
						|
                ],
 | 
						|
                "enum_set_values": [
 | 
						|
                ]
 | 
						|
              },
 | 
						|
               {
 | 
						|
                "item_type":"T_INT",
 | 
						|
                "result_type": {
 | 
						|
                  "meta": {
 | 
						|
                    "type":"BIGINT",
 | 
						|
                    "collation":"binary",
 | 
						|
                    "coercibility":"NUMERIC"
 | 
						|
                  },
 | 
						|
                  "accuracy": {
 | 
						|
                    "length":-1,
 | 
						|
                    "precision":-1,
 | 
						|
                    "scale":-1
 | 
						|
                  },
 | 
						|
                  "flag":1,
 | 
						|
                  "calc_type": {
 | 
						|
                    "type":"NULL",
 | 
						|
                    "collation":"invalid_type",
 | 
						|
                    "coercibility":"INVALID"
 | 
						|
                  }
 | 
						|
                },
 | 
						|
                "expr_info": [
 | 
						|
                  "IS_CONST",
 | 
						|
                  "CNT_CONST"
 | 
						|
                ],
 | 
						|
                "rel_id": [
 | 
						|
                ],
 | 
						|
                "value": {
 | 
						|
                  "BIGINT":85902295062
 | 
						|
                }
 | 
						|
              }
 | 
						|
            ],
 | 
						|
            "enum_set_values": [
 | 
						|
            ]
 | 
						|
          },
 | 
						|
          "idx":0
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_FUN_SYS_CAST",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"VARCHAR",
 | 
						|
                "collation":"utf8mb4_general_ci",
 | 
						|
                "coercibility":"IMPLICIT"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":20,
 | 
						|
                "precision":-1,
 | 
						|
                "scale":-1
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_CONST",
 | 
						|
              "IS_FUNC",
 | 
						|
              "IS_CALCULABLE_EXPR",
 | 
						|
              "IS_CONST_EXPR",
 | 
						|
              "CNT_CONST",
 | 
						|
              "CNT_FUNC",
 | 
						|
              "CNT_CALCULABLE_EXPR"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
            ],
 | 
						|
            "expr_levels": [
 | 
						|
            ],
 | 
						|
            "func":"cast",
 | 
						|
            "children": [
 | 
						|
               {
 | 
						|
                "item_type":"T_INT",
 | 
						|
                "result_type": {
 | 
						|
                  "meta": {
 | 
						|
                    "type":"BIGINT",
 | 
						|
                    "collation":"binary",
 | 
						|
                    "coercibility":"NUMERIC"
 | 
						|
                  },
 | 
						|
                  "accuracy": {
 | 
						|
                    "length":1,
 | 
						|
                    "precision":1,
 | 
						|
                    "scale":0
 | 
						|
                  },
 | 
						|
                  "flag":1,
 | 
						|
                  "calc_type": {
 | 
						|
                    "type":"NULL",
 | 
						|
                    "collation":"invalid_type",
 | 
						|
                    "coercibility":"INVALID"
 | 
						|
                  }
 | 
						|
                },
 | 
						|
                "expr_info": [
 | 
						|
                  "IS_CONST",
 | 
						|
                  "CNT_CONST"
 | 
						|
                ],
 | 
						|
                "rel_id": [
 | 
						|
                ],
 | 
						|
                "value": {
 | 
						|
                  "BIGINT":1
 | 
						|
                }
 | 
						|
              },
 | 
						|
               {
 | 
						|
                "item_type":"T_INT",
 | 
						|
                "result_type": {
 | 
						|
                  "meta": {
 | 
						|
                    "type":"BIGINT",
 | 
						|
                    "collation":"binary",
 | 
						|
                    "coercibility":"NUMERIC"
 | 
						|
                  },
 | 
						|
                  "accuracy": {
 | 
						|
                    "length":-1,
 | 
						|
                    "precision":-1,
 | 
						|
                    "scale":-1
 | 
						|
                  },
 | 
						|
                  "flag":1,
 | 
						|
                  "calc_type": {
 | 
						|
                    "type":"NULL",
 | 
						|
                    "collation":"invalid_type",
 | 
						|
                    "coercibility":"INVALID"
 | 
						|
                  }
 | 
						|
                },
 | 
						|
                "expr_info": [
 | 
						|
                  "IS_CONST",
 | 
						|
                  "CNT_CONST"
 | 
						|
                ],
 | 
						|
                "rel_id": [
 | 
						|
                ],
 | 
						|
                "value": {
 | 
						|
                  "BIGINT":85902295062
 | 
						|
                }
 | 
						|
              }
 | 
						|
            ],
 | 
						|
            "enum_set_values": [
 | 
						|
            ]
 | 
						|
          },
 | 
						|
          "idx":1
 | 
						|
        }
 | 
						|
      ]
 | 
						|
    },
 | 
						|
    "extra_output_exprs": [
 | 
						|
    ],
 | 
						|
    "current_level":0,
 | 
						|
    "equal_sets": [
 | 
						|
    ],
 | 
						|
    "pseudo_column_exprs": [
 | 
						|
    ],
 | 
						|
    "child_stmts": [
 | 
						|
    ],
 | 
						|
    "has_transformed_for_hierarchical_query":false,
 | 
						|
    "is_hierarchical_query":false
 | 
						|
  },
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_OP_UNION",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"VARCHAR",
 | 
						|
            "collation":"utf8mb4_general_ci",
 | 
						|
            "coercibility":"COERCIBLE"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":20,
 | 
						|
            "precision":-1,
 | 
						|
            "scale":-1
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_SET_OP",
 | 
						|
          "CNT_SET_OP"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
        ],
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "children": [
 | 
						|
           {
 | 
						|
            "item_type":"T_FUN_SYS_CAST",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"VARCHAR",
 | 
						|
                "collation":"utf8mb4_general_ci",
 | 
						|
                "coercibility":"IMPLICIT"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":20,
 | 
						|
                "precision":-1,
 | 
						|
                "scale":-1
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_CONST",
 | 
						|
              "IS_FUNC",
 | 
						|
              "IS_CALCULABLE_EXPR",
 | 
						|
              "IS_CONST_EXPR",
 | 
						|
              "CNT_CONST",
 | 
						|
              "CNT_FUNC",
 | 
						|
              "CNT_CALCULABLE_EXPR"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
            ],
 | 
						|
            "expr_levels": [
 | 
						|
            ],
 | 
						|
            "func":"cast",
 | 
						|
            "children": [
 | 
						|
               {
 | 
						|
                "item_type":"T_FUN_SYS_SUBSTR",
 | 
						|
                "result_type": {
 | 
						|
                  "meta": {
 | 
						|
                    "type":"VARCHAR",
 | 
						|
                    "collation":"utf8mb4_general_ci",
 | 
						|
                    "coercibility":"COERCIBLE"
 | 
						|
                  },
 | 
						|
                  "accuracy": {
 | 
						|
                    "length":1,
 | 
						|
                    "precision":-1,
 | 
						|
                    "scale":-1
 | 
						|
                  },
 | 
						|
                  "flag":0,
 | 
						|
                  "calc_type": {
 | 
						|
                    "type":"NULL",
 | 
						|
                    "collation":"invalid_type",
 | 
						|
                    "coercibility":"INVALID"
 | 
						|
                  }
 | 
						|
                },
 | 
						|
                "expr_info": [
 | 
						|
                  "IS_CONST",
 | 
						|
                  "IS_FUNC",
 | 
						|
                  "IS_CALCULABLE_EXPR",
 | 
						|
                  "IS_CONST_EXPR",
 | 
						|
                  "CNT_CONST",
 | 
						|
                  "CNT_FUNC",
 | 
						|
                  "CNT_CALCULABLE_EXPR"
 | 
						|
                ],
 | 
						|
                "rel_id": [
 | 
						|
                ],
 | 
						|
                "expr_levels": [
 | 
						|
                ],
 | 
						|
                "func":"substr",
 | 
						|
                "children": [
 | 
						|
                   {
 | 
						|
                    "item_type":"T_VARCHAR",
 | 
						|
                    "result_type": {
 | 
						|
                      "meta": {
 | 
						|
                        "type":"VARCHAR",
 | 
						|
                        "collation":"utf8mb4_general_ci",
 | 
						|
                        "coercibility":"COERCIBLE"
 | 
						|
                      },
 | 
						|
                      "accuracy": {
 | 
						|
                        "length":1,
 | 
						|
                        "precision":1,
 | 
						|
                        "scale":-1
 | 
						|
                      },
 | 
						|
                      "flag":1,
 | 
						|
                      "calc_type": {
 | 
						|
                        "type":"NULL",
 | 
						|
                        "collation":"invalid_type",
 | 
						|
                        "coercibility":"INVALID"
 | 
						|
                      }
 | 
						|
                    },
 | 
						|
                    "expr_info": [
 | 
						|
                      "IS_CONST",
 | 
						|
                      "CNT_CONST"
 | 
						|
                    ],
 | 
						|
                    "rel_id": [
 | 
						|
                    ],
 | 
						|
                    "value": {
 | 
						|
                      "VARCHAR":"a",
 | 
						|
                      "collation":"utf8mb4_general_ci"
 | 
						|
                    }
 | 
						|
                  },
 | 
						|
                   {
 | 
						|
                    "item_type":"T_INT",
 | 
						|
                    "result_type": {
 | 
						|
                      "meta": {
 | 
						|
                        "type":"BIGINT",
 | 
						|
                        "collation":"binary",
 | 
						|
                        "coercibility":"NUMERIC"
 | 
						|
                      },
 | 
						|
                      "accuracy": {
 | 
						|
                        "length":1,
 | 
						|
                        "precision":1,
 | 
						|
                        "scale":0
 | 
						|
                      },
 | 
						|
                      "flag":1,
 | 
						|
                      "calc_type": {
 | 
						|
                        "type":"NULL",
 | 
						|
                        "collation":"invalid_type",
 | 
						|
                        "coercibility":"INVALID"
 | 
						|
                      }
 | 
						|
                    },
 | 
						|
                    "expr_info": [
 | 
						|
                      "IS_CONST",
 | 
						|
                      "CNT_CONST"
 | 
						|
                    ],
 | 
						|
                    "rel_id": [
 | 
						|
                    ],
 | 
						|
                    "value": {
 | 
						|
                      "BIGINT":1
 | 
						|
                    }
 | 
						|
                  },
 | 
						|
                   {
 | 
						|
                    "item_type":"T_INT",
 | 
						|
                    "result_type": {
 | 
						|
                      "meta": {
 | 
						|
                        "type":"BIGINT",
 | 
						|
                        "collation":"binary",
 | 
						|
                        "coercibility":"NUMERIC"
 | 
						|
                      },
 | 
						|
                      "accuracy": {
 | 
						|
                        "length":1,
 | 
						|
                        "precision":1,
 | 
						|
                        "scale":0
 | 
						|
                      },
 | 
						|
                      "flag":1,
 | 
						|
                      "calc_type": {
 | 
						|
                        "type":"NULL",
 | 
						|
                        "collation":"invalid_type",
 | 
						|
                        "coercibility":"INVALID"
 | 
						|
                      }
 | 
						|
                    },
 | 
						|
                    "expr_info": [
 | 
						|
                      "IS_CONST",
 | 
						|
                      "CNT_CONST"
 | 
						|
                    ],
 | 
						|
                    "rel_id": [
 | 
						|
                    ],
 | 
						|
                    "value": {
 | 
						|
                      "BIGINT":1
 | 
						|
                    }
 | 
						|
                  }
 | 
						|
                ],
 | 
						|
                "enum_set_values": [
 | 
						|
                ]
 | 
						|
              },
 | 
						|
               {
 | 
						|
                "item_type":"T_INT",
 | 
						|
                "result_type": {
 | 
						|
                  "meta": {
 | 
						|
                    "type":"BIGINT",
 | 
						|
                    "collation":"binary",
 | 
						|
                    "coercibility":"NUMERIC"
 | 
						|
                  },
 | 
						|
                  "accuracy": {
 | 
						|
                    "length":-1,
 | 
						|
                    "precision":-1,
 | 
						|
                    "scale":-1
 | 
						|
                  },
 | 
						|
                  "flag":1,
 | 
						|
                  "calc_type": {
 | 
						|
                    "type":"NULL",
 | 
						|
                    "collation":"invalid_type",
 | 
						|
                    "coercibility":"INVALID"
 | 
						|
                  }
 | 
						|
                },
 | 
						|
                "expr_info": [
 | 
						|
                  "IS_CONST",
 | 
						|
                  "CNT_CONST"
 | 
						|
                ],
 | 
						|
                "rel_id": [
 | 
						|
                ],
 | 
						|
                "value": {
 | 
						|
                  "BIGINT":85902295062
 | 
						|
                }
 | 
						|
              }
 | 
						|
            ],
 | 
						|
            "enum_set_values": [
 | 
						|
            ]
 | 
						|
          },
 | 
						|
           {
 | 
						|
            "item_type":"T_FUN_SYS_CAST",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"VARCHAR",
 | 
						|
                "collation":"utf8mb4_general_ci",
 | 
						|
                "coercibility":"IMPLICIT"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":20,
 | 
						|
                "precision":-1,
 | 
						|
                "scale":-1
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_CONST",
 | 
						|
              "IS_FUNC",
 | 
						|
              "IS_CALCULABLE_EXPR",
 | 
						|
              "IS_CONST_EXPR",
 | 
						|
              "CNT_CONST",
 | 
						|
              "CNT_FUNC",
 | 
						|
              "CNT_CALCULABLE_EXPR"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
            ],
 | 
						|
            "expr_levels": [
 | 
						|
            ],
 | 
						|
            "func":"cast",
 | 
						|
            "children": [
 | 
						|
               {
 | 
						|
                "item_type":"T_INT",
 | 
						|
                "result_type": {
 | 
						|
                  "meta": {
 | 
						|
                    "type":"BIGINT",
 | 
						|
                    "collation":"binary",
 | 
						|
                    "coercibility":"NUMERIC"
 | 
						|
                  },
 | 
						|
                  "accuracy": {
 | 
						|
                    "length":1,
 | 
						|
                    "precision":1,
 | 
						|
                    "scale":0
 | 
						|
                  },
 | 
						|
                  "flag":1,
 | 
						|
                  "calc_type": {
 | 
						|
                    "type":"NULL",
 | 
						|
                    "collation":"invalid_type",
 | 
						|
                    "coercibility":"INVALID"
 | 
						|
                  }
 | 
						|
                },
 | 
						|
                "expr_info": [
 | 
						|
                  "IS_CONST",
 | 
						|
                  "CNT_CONST"
 | 
						|
                ],
 | 
						|
                "rel_id": [
 | 
						|
                ],
 | 
						|
                "value": {
 | 
						|
                  "BIGINT":1
 | 
						|
                }
 | 
						|
              },
 | 
						|
               {
 | 
						|
                "item_type":"T_INT",
 | 
						|
                "result_type": {
 | 
						|
                  "meta": {
 | 
						|
                    "type":"BIGINT",
 | 
						|
                    "collation":"binary",
 | 
						|
                    "coercibility":"NUMERIC"
 | 
						|
                  },
 | 
						|
                  "accuracy": {
 | 
						|
                    "length":-1,
 | 
						|
                    "precision":-1,
 | 
						|
                    "scale":-1
 | 
						|
                  },
 | 
						|
                  "flag":1,
 | 
						|
                  "calc_type": {
 | 
						|
                    "type":"NULL",
 | 
						|
                    "collation":"invalid_type",
 | 
						|
                    "coercibility":"INVALID"
 | 
						|
                  }
 | 
						|
                },
 | 
						|
                "expr_info": [
 | 
						|
                  "IS_CONST",
 | 
						|
                  "CNT_CONST"
 | 
						|
                ],
 | 
						|
                "rel_id": [
 | 
						|
                ],
 | 
						|
                "value": {
 | 
						|
                  "BIGINT":85902295062
 | 
						|
                }
 | 
						|
              }
 | 
						|
            ],
 | 
						|
            "enum_set_values": [
 | 
						|
            ]
 | 
						|
          }
 | 
						|
        ]
 | 
						|
      },
 | 
						|
      "is_alias":true,
 | 
						|
      "alias_name":"substr('a',1,1)",
 | 
						|
      "expr_name":"substr('a',1,1)",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ]
 | 
						|
}
 | 
						|
***************   Case 28   ***************
 | 
						|
select * from (select c1, c2, c2 from t1) tt;
 | 
						|
***************   Case 29   ***************
 | 
						|
select c1 from t1 where c1 in (select c1 from t2 where c2 >= some(select c1 from t3 where t1.c2=t3.c1));
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "synonym_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511677877,
 | 
						|
      "database_name":"subquery_db",
 | 
						|
      "for_update":false,
 | 
						|
      "wait":-1,
 | 
						|
      "mock_id":-1,
 | 
						|
      "view_base_item":-1
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c2",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":17,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":0,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":17,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c2",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":1,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "column":"c1",
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "base_tid":1099511677877,
 | 
						|
      "base_cid":16,
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "flag":16387,
 | 
						|
          "calc_type": {
 | 
						|
            "type":"NULL",
 | 
						|
            "collation":"invalid_type",
 | 
						|
            "coercibility":"INVALID"
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511677877,
 | 
						|
        "column_id":16,
 | 
						|
        "database_name":"subquery_db",
 | 
						|
        "table_name":"t1",
 | 
						|
        "synonym_name":"",
 | 
						|
        "column_name":"c1",
 | 
						|
        "expr_level":0,
 | 
						|
        "expr_levels": [
 | 
						|
          0
 | 
						|
        ],
 | 
						|
        "column_flags":0,
 | 
						|
        "is_explicited_referece":true,
 | 
						|
        "explicited_ref_count":2,
 | 
						|
        "enum_set_values": [
 | 
						|
        ],
 | 
						|
        "is_lob_column":false
 | 
						|
      },
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c1",
 | 
						|
      "expr_name":"c1",
 | 
						|
      "default": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "rollup":false,
 | 
						|
  "nocycle":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":1099511677877,
 | 
						|
      "is_join":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "start_with": [
 | 
						|
  ],
 | 
						|
  "connect_by": [
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
     {
 | 
						|
      "item_type":"T_OP_SQ_EQ",
 | 
						|
      "result_type": {
 | 
						|
        "meta": {
 | 
						|
          "type":"TINYINT",
 | 
						|
          "collation":"binary",
 | 
						|
          "coercibility":"NUMERIC"
 | 
						|
        },
 | 
						|
        "accuracy": {
 | 
						|
          "length":-1,
 | 
						|
          "precision":4,
 | 
						|
          "scale":0
 | 
						|
        },
 | 
						|
        "flag":1,
 | 
						|
        "calc_type": {
 | 
						|
          "type":"NULL",
 | 
						|
          "collation":"invalid_type",
 | 
						|
          "coercibility":"INVALID"
 | 
						|
        }
 | 
						|
      },
 | 
						|
      "expr_info": [
 | 
						|
        "CNT_COLUMN",
 | 
						|
        "CNT_SUB_QUERY",
 | 
						|
        "IS_WITH_ANY"
 | 
						|
      ],
 | 
						|
      "rel_id": [
 | 
						|
        1
 | 
						|
      ],
 | 
						|
      "expr_levels": [
 | 
						|
        0,
 | 
						|
        1,
 | 
						|
        2
 | 
						|
      ],
 | 
						|
      "children": [
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_COLUMN",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"INT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":11,
 | 
						|
              "scale":0
 | 
						|
            },
 | 
						|
            "flag":16387,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_COLUMN",
 | 
						|
            "CNT_COLUMN"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "table_id":1099511677877,
 | 
						|
          "column_id":16,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "table_name":"t1",
 | 
						|
          "synonym_name":"",
 | 
						|
          "column_name":"c1",
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            0
 | 
						|
          ],
 | 
						|
          "column_flags":0,
 | 
						|
          "is_explicited_referece":true,
 | 
						|
          "explicited_ref_count":2,
 | 
						|
          "enum_set_values": [
 | 
						|
          ],
 | 
						|
          "is_lob_column":false
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "item_type":"T_REF_QUERY",
 | 
						|
          "result_type": {
 | 
						|
            "meta": {
 | 
						|
              "type":"BIGINT",
 | 
						|
              "collation":"binary",
 | 
						|
              "coercibility":"NUMERIC"
 | 
						|
            },
 | 
						|
            "accuracy": {
 | 
						|
              "length":-1,
 | 
						|
              "precision":-1,
 | 
						|
              "scale":-1
 | 
						|
            },
 | 
						|
            "flag":0,
 | 
						|
            "calc_type": {
 | 
						|
              "type":"NULL",
 | 
						|
              "collation":"invalid_type",
 | 
						|
              "coercibility":"INVALID"
 | 
						|
            }
 | 
						|
          },
 | 
						|
          "expr_info": [
 | 
						|
            "IS_SUB_QUERY",
 | 
						|
            "CNT_SUB_QUERY"
 | 
						|
          ],
 | 
						|
          "rel_id": [
 | 
						|
            1
 | 
						|
          ],
 | 
						|
          "id":0,
 | 
						|
          "expr_level":0,
 | 
						|
          "expr_levels": [
 | 
						|
            0,
 | 
						|
            1,
 | 
						|
            2
 | 
						|
          ],
 | 
						|
          "output_column":1,
 | 
						|
          "is_set":true,
 | 
						|
          "column_types": [
 | 
						|
             {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":16387,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "enum_set_values": [
 | 
						|
          ]
 | 
						|
        }
 | 
						|
      ]
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
  "show_stmt_ctx": {
 | 
						|
    "is_from_show_stmt":false,
 | 
						|
    "global_scope":false,
 | 
						|
    "tenant_id":-1,
 | 
						|
    "show_database_id":-1,
 | 
						|
    "show_table_id":-1,
 | 
						|
    "grants_user_id":-1
 | 
						|
  },
 | 
						|
  "hint": {
 | 
						|
    "read_static":false,
 | 
						|
    "no_rewrite":false,
 | 
						|
    "frozen_version":-1,
 | 
						|
    "topk_precision":-1,
 | 
						|
    "sharding_minimum_row_count":0,
 | 
						|
    "query_timeout":-1,
 | 
						|
    "hotspot":false,
 | 
						|
    "index": [
 | 
						|
    ],
 | 
						|
    "read_consistency":-1,
 | 
						|
    "join_ordered":false,
 | 
						|
    "join_order": [
 | 
						|
    ],
 | 
						|
    "merge_hint_ids": [
 | 
						|
    ],
 | 
						|
    "hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "no_hash_hint_ids": [
 | 
						|
    ],
 | 
						|
    "nl_hint_ids": [
 | 
						|
    ],
 | 
						|
    "part_hints": [
 | 
						|
    ],
 | 
						|
    "use_late_materialization":-1,
 | 
						|
    "log_level":"",
 | 
						|
    "max_concurrent":-1,
 | 
						|
    "only_concurrent_hint":false,
 | 
						|
    "has_hint_exclude_concurrent":false,
 | 
						|
    "parallel":-1,
 | 
						|
    "use_px":2,
 | 
						|
    "use join filter":false,
 | 
						|
    "org_pq_distributes": [
 | 
						|
    ],
 | 
						|
    "pq_distributes": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "query_context": {
 | 
						|
    "param_num":0,
 | 
						|
    "fetch_cur_time":true,
 | 
						|
    "calculable_items": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "extra_output_exprs": [
 | 
						|
  ],
 | 
						|
  "current_level":0,
 | 
						|
  "equal_sets": [
 | 
						|
  ],
 | 
						|
  "pseudo_column_exprs": [
 | 
						|
  ],
 | 
						|
  "child_stmts": [
 | 
						|
     {
 | 
						|
      "stmt_type":1,
 | 
						|
      "table": [
 | 
						|
         {
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "table_name":"t2",
 | 
						|
          "alias_name":"",
 | 
						|
          "synonym_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511677878,
 | 
						|
          "database_name":"subquery_db",
 | 
						|
          "for_update":false,
 | 
						|
          "wait":-1,
 | 
						|
          "mock_id":-1,
 | 
						|
          "view_base_item":-1
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "joined_table": [
 | 
						|
      ],
 | 
						|
      "partition_express": [
 | 
						|
      ],
 | 
						|
      "column": [
 | 
						|
         {
 | 
						|
          "column_id":17,
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "column":"c2",
 | 
						|
          "auto_filled_timestamp":false,
 | 
						|
          "default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "base_tid":1099511677878,
 | 
						|
          "base_cid":17,
 | 
						|
          "expression": {
 | 
						|
            "item_type":"T_REF_COLUMN",
 | 
						|
            "result_type": {
 | 
						|
              "meta": {
 | 
						|
                "type":"INT",
 | 
						|
                "collation":"binary",
 | 
						|
                "coercibility":"NUMERIC"
 | 
						|
              },
 | 
						|
              "accuracy": {
 | 
						|
                "length":-1,
 | 
						|
                "precision":11,
 | 
						|
                "scale":0
 | 
						|
              },
 | 
						|
              "flag":0,
 | 
						|
              "calc_type": {
 | 
						|
                "type":"NULL",
 | 
						|
                "collation":"invalid_type",
 | 
						|
                "coercibility":"INVALID"
 | 
						|
              }
 | 
						|
            },
 | 
						|
            "expr_info": [
 | 
						|
              "IS_COLUMN",
 | 
						|
              "CNT_COLUMN"
 | 
						|
            ],
 | 
						|
            "rel_id": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "table_id":1099511677878,
 | 
						|
            "column_id":17,
 | 
						|
            "database_name":"subquery_db",
 | 
						|
            "table_name":"t2",
 | 
						|
            "synonym_name":"",
 | 
						|
            "column_name":"c2",
 | 
						|
            "expr_level":1,
 | 
						|
            "expr_levels": [
 | 
						|
              1
 | 
						|
            ],
 | 
						|
            "column_flags":0,
 | 
						|
            "is_explicited_referece":true,
 | 
						|
            "explicited_ref_count":1,
 | 
						|
            "enum_set_values": [
 | 
						|
            ],
 | 
						|
            "is_lob_column":false
 | 
						|
          }
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "column_id":16,
 | 
						|
          "table_id":1099511677878,
 | 
						|
          "column":"c1",
 | 
						|
          "auto_filled_timestamp":false,
 | 
						|
          "default_value": {
 | 
						|
            "NULL":"NULL"
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 | 
						|
                    "meta": {
 | 
						|
                      "type":"INT",
 | 
						|
                      "collation":"binary",
 | 
						|
                      "coercibility":"NUMERIC"
 | 
						|
                    },
 | 
						|
                    "accuracy": {
 | 
						|
                      "length":-1,
 | 
						|
                      "precision":11,
 | 
						|
                      "scale":0
 | 
						|
                    },
 | 
						|
                    "flag":0,
 | 
						|
                    "calc_type": {
 | 
						|
                      "type":"NULL",
 | 
						|
                      "collation":"invalid_type",
 | 
						|
                      "coercibility":"INVALID"
 | 
						|
                    }
 | 
						|
                  },
 | 
						|
                  "expr_info": [
 | 
						|
                    "IS_COLUMN",
 | 
						|
                    "CNT_COLUMN"
 | 
						|
                  ],
 | 
						|
                  "rel_id": [
 | 
						|
                    1
 | 
						|
                  ],
 | 
						|
                  "table_id":1099511677877,
 | 
						|
                  "column_id":17,
 | 
						|
                  "database_name":"subquery_db",
 | 
						|
                  "table_name":"t1",
 | 
						|
                  "synonym_name":"",
 | 
						|
                  "column_name":"c2",
 | 
						|
                  "expr_level":0,
 | 
						|
                  "expr_levels": [
 | 
						|
                    0
 | 
						|
                  ],
 | 
						|
                  "column_flags":0,
 | 
						|
                  "is_explicited_referece":true,
 | 
						|
                  "explicited_ref_count":1,
 | 
						|
                  "enum_set_values": [
 | 
						|
                  ],
 | 
						|
                  "is_lob_column":false
 | 
						|
                },
 | 
						|
                 {
 | 
						|
                  "item_type":"T_REF_COLUMN",
 | 
						|
                  "result_type": {
 | 
						|
                    "meta": {
 | 
						|
                      "type":"INT",
 | 
						|
                      "collation":"binary",
 | 
						|
                      "coercibility":"NUMERIC"
 | 
						|
                    },
 | 
						|
                    "accuracy": {
 | 
						|
                      "length":-1,
 | 
						|
                      "precision":11,
 | 
						|
                      "scale":0
 | 
						|
                    },
 | 
						|
                    "flag":0,
 | 
						|
                    "calc_type": {
 | 
						|
                      "type":"NULL",
 | 
						|
                      "collation":"invalid_type",
 | 
						|
                      "coercibility":"INVALID"
 | 
						|
                    }
 | 
						|
                  },
 | 
						|
                  "expr_info": [
 | 
						|
                    "IS_COLUMN",
 | 
						|
                    "CNT_COLUMN"
 | 
						|
                  ],
 | 
						|
                  "rel_id": [
 | 
						|
                    1
 | 
						|
                  ],
 | 
						|
                  "table_id":1099511677879,
 | 
						|
                  "column_id":16,
 | 
						|
                  "database_name":"subquery_db",
 | 
						|
                  "table_name":"t3",
 | 
						|
                  "synonym_name":"",
 | 
						|
                  "column_name":"c1",
 | 
						|
                  "expr_level":2,
 | 
						|
                  "expr_levels": [
 | 
						|
                    2
 | 
						|
                  ],
 | 
						|
                  "column_flags":0,
 | 
						|
                  "is_explicited_referece":true,
 | 
						|
                  "explicited_ref_count":2,
 | 
						|
                  "enum_set_values": [
 | 
						|
                  ],
 | 
						|
                  "is_lob_column":false
 | 
						|
                }
 | 
						|
              ]
 | 
						|
            }
 | 
						|
          ],
 | 
						|
          "group_by": [
 | 
						|
          ],
 | 
						|
          "having": [
 | 
						|
          ],
 | 
						|
          "aggr_func": [
 | 
						|
          ],
 | 
						|
          "order_by": [
 | 
						|
          ],
 | 
						|
          "limit":null,
 | 
						|
          "offset":null,
 | 
						|
          "show_stmt_ctx": {
 | 
						|
            "is_from_show_stmt":false,
 | 
						|
            "global_scope":false,
 | 
						|
            "tenant_id":-1,
 | 
						|
            "show_database_id":-1,
 | 
						|
            "show_table_id":-1,
 | 
						|
            "grants_user_id":-1
 | 
						|
          },
 | 
						|
          "hint": {
 | 
						|
            "read_static":false,
 | 
						|
            "no_rewrite":false,
 | 
						|
            "frozen_version":-1,
 | 
						|
            "topk_precision":-1,
 | 
						|
            "sharding_minimum_row_count":0,
 | 
						|
            "query_timeout":-1,
 | 
						|
            "hotspot":false,
 | 
						|
            "index": [
 | 
						|
            ],
 | 
						|
            "read_consistency":-1,
 | 
						|
            "join_ordered":false,
 | 
						|
            "join_order": [
 | 
						|
            ],
 | 
						|
            "merge_hint_ids": [
 | 
						|
            ],
 | 
						|
            "hash_hint_ids": [
 | 
						|
            ],
 | 
						|
            "no_hash_hint_ids": [
 | 
						|
            ],
 | 
						|
            "nl_hint_ids": [
 | 
						|
            ],
 | 
						|
            "part_hints": [
 | 
						|
            ],
 | 
						|
            "use_late_materialization":-1,
 | 
						|
            "log_level":"",
 | 
						|
            "max_concurrent":-1,
 | 
						|
            "only_concurrent_hint":false,
 | 
						|
            "has_hint_exclude_concurrent":false,
 | 
						|
            "parallel":-1,
 | 
						|
            "use_px":2,
 | 
						|
            "use join filter":false,
 | 
						|
            "org_pq_distributes": [
 | 
						|
            ],
 | 
						|
            "pq_distributes": [
 | 
						|
            ]
 | 
						|
          },
 | 
						|
          "query_context": {
 | 
						|
            "param_num":0,
 | 
						|
            "fetch_cur_time":true,
 | 
						|
            "calculable_items": [
 | 
						|
            ]
 | 
						|
          },
 | 
						|
          "extra_output_exprs": [
 | 
						|
          ],
 | 
						|
          "current_level":2,
 | 
						|
          "equal_sets": [
 | 
						|
          ],
 | 
						|
          "pseudo_column_exprs": [
 | 
						|
          ],
 | 
						|
          "child_stmts": [
 | 
						|
          ],
 | 
						|
          "has_transformed_for_hierarchical_query":false,
 | 
						|
          "is_hierarchical_query":false
 | 
						|
        }
 | 
						|
      ],
 | 
						|
      "has_transformed_for_hierarchical_query":false,
 | 
						|
      "is_hierarchical_query":false
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "has_transformed_for_hierarchical_query":false,
 | 
						|
  "is_hierarchical_query":false
 | 
						|
}
 | 
						|
***************   Case 30   ***************
 | 
						|
drop database subquery_db;
 | 
						|
{
 | 
						|
  "drop_database_arg":"tenant_id",
 | 
						|
  "database_name":"subquery_db",
 | 
						|
  "if_exist":false,
 | 
						|
  "to_recyclebin":false
 | 
						|
}
 |