2911 lines
		
	
	
		
			62 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			2911 lines
		
	
	
		
			62 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
***************   Case 1   ***************
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create database join_on
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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":"join_on",
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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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}
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***************   Case 2   ***************
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use join_on;
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{
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  "stmt_type":79,
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  "table_items": [
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  ],
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  "column_items": [
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  ]
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}
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***************   Case 3   ***************
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create table t1 (a int , b int);
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{
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  "stmt_type":17,
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  "create_table_arg": {
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    "if_not_exist":false,
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    "schema": {
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      "tenant_id":1,
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      "database_id":1099511628804,
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      "tablegroup_id":1099511627777,
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      "table_id":-1,
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      "table_name":"t1",
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      "max_used_column_id":17,
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      "rowkey_column_num":1,
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      "index_column_num":0,
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      "rowkey_split_pos":0,
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						|
      "block_size":16384,
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						|
      "is_use_bloomfilter":false,
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      "progressive_merge_num":1,
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      "replica_num":0,
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						|
      "load_type":0,
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      "table_type":0,
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						|
      "index_type":0,
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						|
      "def_type":1,
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      "charset_type":2,
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      "collation_type":45,
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      "data_table_id":0,
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      "create_mem_version":0,
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      "index_status":1,
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						|
      "name_casemode":-1,
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						|
      "code_version":1,
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						|
      "schema_version":0,
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						|
      "last_modified_frozen_version":0,
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      "part_level":1,
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      "part_expr": {
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        "part_func_type":0,
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        "part_func_expr":"",
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        "part_num":1
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      },
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      "comment":"",
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      "tablegroup_name":"",
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      "compress_func_name":"none",
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      "primary_zone":"",
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      "expire_info":"",
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      "view_schema": {
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        "view_definition":"",
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        "check_option":"none",
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        "is_updatable":"false",
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        "alias_name":""
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      },
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      "autoinc_column_id":0,
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      "auto_increment":0,
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      "index_tid_array": [
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      ],
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      "column_array": [
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         {
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          "tenant_id":-1,
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          "table_id":-1,
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          "column_id":16,
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						|
          "schema_version":0,
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						|
          "rowkey_position":0,
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						|
          "index_position":0,
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						|
          "order_in_rowkey":0,
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          "meta_type": {
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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":11,
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            "precision":11,
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            "scale":0
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          },
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          "is_nullable":true,
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          "is_autoincrement":false,
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          "is_hidden":false,
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          "charset_type":2,
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          "on_update_current_timestamp":false,
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          "orig_default_value": {
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            "NULL":"NULL"
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          },
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          "cur_default_value": {
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            "NULL":"NULL"
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          },
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          "column_name":"a",
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          "comment":""
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        },
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         {
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          "tenant_id":-1,
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          "table_id":-1,
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          "column_id":17,
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          "schema_version":0,
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          "rowkey_position":0,
 | 
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          "index_position":0,
 | 
						|
          "order_in_rowkey":0,
 | 
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          "meta_type": {
 | 
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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": {
 | 
						|
            "length":11,
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						|
            "precision":11,
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            "scale":0
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          },
 | 
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          "is_nullable":true,
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          "is_autoincrement":false,
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						|
          "is_hidden":false,
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						|
          "charset_type":2,
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						|
          "on_update_current_timestamp":false,
 | 
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          "orig_default_value": {
 | 
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            "NULL":"NULL"
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          },
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          "cur_default_value": {
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            "NULL":"NULL"
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          },
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          "column_name":"b",
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          "comment":""
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        },
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         {
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          "tenant_id":-1,
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          "table_id":-1,
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          "column_id":1,
 | 
						|
          "schema_version":0,
 | 
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          "rowkey_position":1,
 | 
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          "index_position":0,
 | 
						|
          "order_in_rowkey":0,
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          "meta_type": {
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            "type":"BIGINT UNSIGNED",
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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":-1,
 | 
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            "scale":-1
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						|
          },
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          "is_nullable":false,
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          "is_autoincrement":true,
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          "is_hidden":true,
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          "charset_type":1,
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          "on_update_current_timestamp":false,
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          "orig_default_value": {
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            "NULL":"NULL"
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          },
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          "cur_default_value": {
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            "NULL":"NULL"
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          },
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          "column_name":"__pk",
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          "comment":""
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        }
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      ]
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    },
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    "index_arg_list": [
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    ]
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  },
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  "db_name":"join_on"
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}
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***************   Case 4   ***************
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create table t2 (c int , d int);
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{
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  "stmt_type":17,
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  "create_table_arg": {
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    "if_not_exist":false,
 | 
						|
    "schema": {
 | 
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      "tenant_id":1,
 | 
						|
      "database_id":1099511628804,
 | 
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      "tablegroup_id":1099511627777,
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      "table_id":-1,
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      "table_name":"t2",
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						|
      "max_used_column_id":17,
 | 
						|
      "rowkey_column_num":1,
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						|
      "index_column_num":0,
 | 
						|
      "rowkey_split_pos":0,
 | 
						|
      "block_size":16384,
 | 
						|
      "is_use_bloomfilter":false,
 | 
						|
      "progressive_merge_num":1,
 | 
						|
      "replica_num":0,
 | 
						|
      "load_type":0,
 | 
						|
      "table_type":0,
 | 
						|
      "index_type":0,
 | 
						|
      "def_type":1,
 | 
						|
      "charset_type":2,
 | 
						|
      "collation_type":45,
 | 
						|
      "data_table_id":0,
 | 
						|
      "create_mem_version":0,
 | 
						|
      "index_status":1,
 | 
						|
      "name_casemode":-1,
 | 
						|
      "code_version":1,
 | 
						|
      "schema_version":0,
 | 
						|
      "last_modified_frozen_version":0,
 | 
						|
      "part_level":1,
 | 
						|
      "part_expr": {
 | 
						|
        "part_func_type":0,
 | 
						|
        "part_func_expr":"",
 | 
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        "part_num":1
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      },
 | 
						|
      "comment":"",
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						|
      "tablegroup_name":"",
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      "compress_func_name":"none",
 | 
						|
      "primary_zone":"",
 | 
						|
      "expire_info":"",
 | 
						|
      "view_schema": {
 | 
						|
        "view_definition":"",
 | 
						|
        "check_option":"none",
 | 
						|
        "is_updatable":"false",
 | 
						|
        "alias_name":""
 | 
						|
      },
 | 
						|
      "autoinc_column_id":0,
 | 
						|
      "auto_increment":0,
 | 
						|
      "index_tid_array": [
 | 
						|
      ],
 | 
						|
      "column_array": [
 | 
						|
         {
 | 
						|
          "tenant_id":-1,
 | 
						|
          "table_id":-1,
 | 
						|
          "column_id":16,
 | 
						|
          "schema_version":0,
 | 
						|
          "rowkey_position":0,
 | 
						|
          "index_position":0,
 | 
						|
          "order_in_rowkey":0,
 | 
						|
          "meta_type": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "is_nullable":true,
 | 
						|
          "is_autoincrement":false,
 | 
						|
          "is_hidden":false,
 | 
						|
          "charset_type":2,
 | 
						|
          "on_update_current_timestamp":false,
 | 
						|
          "orig_default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "cur_default_value": {
 | 
						|
            "NULL":"NULL"
 | 
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          },
 | 
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          "column_name":"c",
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          "comment":""
 | 
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        },
 | 
						|
         {
 | 
						|
          "tenant_id":-1,
 | 
						|
          "table_id":-1,
 | 
						|
          "column_id":17,
 | 
						|
          "schema_version":0,
 | 
						|
          "rowkey_position":0,
 | 
						|
          "index_position":0,
 | 
						|
          "order_in_rowkey":0,
 | 
						|
          "meta_type": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "is_nullable":true,
 | 
						|
          "is_autoincrement":false,
 | 
						|
          "is_hidden":false,
 | 
						|
          "charset_type":2,
 | 
						|
          "on_update_current_timestamp":false,
 | 
						|
          "orig_default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "cur_default_value": {
 | 
						|
            "NULL":"NULL"
 | 
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          },
 | 
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          "column_name":"d",
 | 
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          "comment":""
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "tenant_id":-1,
 | 
						|
          "table_id":-1,
 | 
						|
          "column_id":1,
 | 
						|
          "schema_version":0,
 | 
						|
          "rowkey_position":1,
 | 
						|
          "index_position":0,
 | 
						|
          "order_in_rowkey":0,
 | 
						|
          "meta_type": {
 | 
						|
            "type":"BIGINT UNSIGNED",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":-1,
 | 
						|
            "scale":-1
 | 
						|
          },
 | 
						|
          "is_nullable":false,
 | 
						|
          "is_autoincrement":true,
 | 
						|
          "is_hidden":true,
 | 
						|
          "charset_type":1,
 | 
						|
          "on_update_current_timestamp":false,
 | 
						|
          "orig_default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "cur_default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "column_name":"__pk",
 | 
						|
          "comment":""
 | 
						|
        }
 | 
						|
      ]
 | 
						|
    },
 | 
						|
    "index_arg_list": [
 | 
						|
    ]
 | 
						|
  },
 | 
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  "db_name":"join_on"
 | 
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}
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***************   Case 5   ***************
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create table t3 (e int , b int);
 | 
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{
 | 
						|
  "stmt_type":17,
 | 
						|
  "create_table_arg": {
 | 
						|
    "if_not_exist":false,
 | 
						|
    "schema": {
 | 
						|
      "tenant_id":1,
 | 
						|
      "database_id":1099511628804,
 | 
						|
      "tablegroup_id":1099511627777,
 | 
						|
      "table_id":-1,
 | 
						|
      "table_name":"t3",
 | 
						|
      "max_used_column_id":17,
 | 
						|
      "rowkey_column_num":1,
 | 
						|
      "index_column_num":0,
 | 
						|
      "rowkey_split_pos":0,
 | 
						|
      "block_size":16384,
 | 
						|
      "is_use_bloomfilter":false,
 | 
						|
      "progressive_merge_num":1,
 | 
						|
      "replica_num":0,
 | 
						|
      "load_type":0,
 | 
						|
      "table_type":0,
 | 
						|
      "index_type":0,
 | 
						|
      "def_type":1,
 | 
						|
      "charset_type":2,
 | 
						|
      "collation_type":45,
 | 
						|
      "data_table_id":0,
 | 
						|
      "create_mem_version":0,
 | 
						|
      "index_status":1,
 | 
						|
      "name_casemode":-1,
 | 
						|
      "code_version":1,
 | 
						|
      "schema_version":0,
 | 
						|
      "last_modified_frozen_version":0,
 | 
						|
      "part_level":1,
 | 
						|
      "part_expr": {
 | 
						|
        "part_func_type":0,
 | 
						|
        "part_func_expr":"",
 | 
						|
        "part_num":1
 | 
						|
      },
 | 
						|
      "comment":"",
 | 
						|
      "tablegroup_name":"",
 | 
						|
      "compress_func_name":"none",
 | 
						|
      "primary_zone":"",
 | 
						|
      "expire_info":"",
 | 
						|
      "view_schema": {
 | 
						|
        "view_definition":"",
 | 
						|
        "check_option":"none",
 | 
						|
        "is_updatable":"false",
 | 
						|
        "alias_name":""
 | 
						|
      },
 | 
						|
      "autoinc_column_id":0,
 | 
						|
      "auto_increment":0,
 | 
						|
      "index_tid_array": [
 | 
						|
      ],
 | 
						|
      "column_array": [
 | 
						|
         {
 | 
						|
          "tenant_id":-1,
 | 
						|
          "table_id":-1,
 | 
						|
          "column_id":16,
 | 
						|
          "schema_version":0,
 | 
						|
          "rowkey_position":0,
 | 
						|
          "index_position":0,
 | 
						|
          "order_in_rowkey":0,
 | 
						|
          "meta_type": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "is_nullable":true,
 | 
						|
          "is_autoincrement":false,
 | 
						|
          "is_hidden":false,
 | 
						|
          "charset_type":2,
 | 
						|
          "on_update_current_timestamp":false,
 | 
						|
          "orig_default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "cur_default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "column_name":"e",
 | 
						|
          "comment":""
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "tenant_id":-1,
 | 
						|
          "table_id":-1,
 | 
						|
          "column_id":17,
 | 
						|
          "schema_version":0,
 | 
						|
          "rowkey_position":0,
 | 
						|
          "index_position":0,
 | 
						|
          "order_in_rowkey":0,
 | 
						|
          "meta_type": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          },
 | 
						|
          "is_nullable":true,
 | 
						|
          "is_autoincrement":false,
 | 
						|
          "is_hidden":false,
 | 
						|
          "charset_type":2,
 | 
						|
          "on_update_current_timestamp":false,
 | 
						|
          "orig_default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "cur_default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "column_name":"b",
 | 
						|
          "comment":""
 | 
						|
        },
 | 
						|
         {
 | 
						|
          "tenant_id":-1,
 | 
						|
          "table_id":-1,
 | 
						|
          "column_id":1,
 | 
						|
          "schema_version":0,
 | 
						|
          "rowkey_position":1,
 | 
						|
          "index_position":0,
 | 
						|
          "order_in_rowkey":0,
 | 
						|
          "meta_type": {
 | 
						|
            "type":"BIGINT UNSIGNED",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":-1,
 | 
						|
            "precision":-1,
 | 
						|
            "scale":-1
 | 
						|
          },
 | 
						|
          "is_nullable":false,
 | 
						|
          "is_autoincrement":true,
 | 
						|
          "is_hidden":true,
 | 
						|
          "charset_type":1,
 | 
						|
          "on_update_current_timestamp":false,
 | 
						|
          "orig_default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "cur_default_value": {
 | 
						|
            "NULL":"NULL"
 | 
						|
          },
 | 
						|
          "column_name":"__pk",
 | 
						|
          "comment":""
 | 
						|
        }
 | 
						|
      ]
 | 
						|
    },
 | 
						|
    "index_arg_list": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "db_name":"join_on"
 | 
						|
}
 | 
						|
***************   Case 6   ***************
 | 
						|
select * from t1 left join (t2 left join t3 on c+1=e) on t1.b=t3.b;
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511631158,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511631158,
 | 
						|
      "database_name":"join_on"
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "table_id":1099511631159,
 | 
						|
      "table_name":"t2",
 | 
						|
      "alias_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511631159,
 | 
						|
      "database_name":"join_on"
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "table_id":1099511631160,
 | 
						|
      "table_name":"t3",
 | 
						|
      "alias_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511631160,
 | 
						|
      "database_name":"join_on"
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
     {
 | 
						|
      "table_id":-2,
 | 
						|
      "table_type":3,
 | 
						|
      "join_type":"LEFT OUTER JOIN",
 | 
						|
      "left_table": {
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "table_name":"t1",
 | 
						|
        "alias_name":"",
 | 
						|
        "table_type":0,
 | 
						|
        "ref_id":1099511631158,
 | 
						|
        "database_name":"join_on"
 | 
						|
      },
 | 
						|
      "right_table": {
 | 
						|
        "table_id":-3,
 | 
						|
        "table_type":3,
 | 
						|
        "join_type":"LEFT OUTER JOIN",
 | 
						|
        "left_table": {
 | 
						|
          "table_id":1099511631159,
 | 
						|
          "table_name":"t2",
 | 
						|
          "alias_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511631159,
 | 
						|
          "database_name":"join_on"
 | 
						|
        },
 | 
						|
        "right_table": {
 | 
						|
          "table_id":1099511631160,
 | 
						|
          "table_name":"t3",
 | 
						|
          "alias_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511631160,
 | 
						|
          "database_name":"join_on"
 | 
						|
        }
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "column_name":"c",
 | 
						|
      "table_id":1099511631159,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "column_name":"e",
 | 
						|
      "table_id":1099511631160,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "column_name":"b",
 | 
						|
      "table_id":1099511631158,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "column_name":"b",
 | 
						|
      "table_id":1099511631160,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "column_name":"a",
 | 
						|
      "table_id":1099511631158,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "column_name":"d",
 | 
						|
      "table_id":1099511631159,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65519,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"a",
 | 
						|
      "expr_name":"a",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65518,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"b",
 | 
						|
      "expr_name":"b",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65517,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c",
 | 
						|
      "expr_name":"c",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65516,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"d",
 | 
						|
      "expr_name":"d",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65515,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"e",
 | 
						|
      "expr_name":"e",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65514,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"b",
 | 
						|
      "expr_name":"b",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":-2,
 | 
						|
      "is_join":true
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
  "for_update":false,
 | 
						|
  "wait":-1,
 | 
						|
  "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
 | 
						|
  },
 | 
						|
  "when": [
 | 
						|
  ],
 | 
						|
  "hint": {
 | 
						|
    "read_static":false,
 | 
						|
    "frozen_version":-1,
 | 
						|
    "topk_precision":-1,
 | 
						|
    "sharding_minimum_row_count":0,
 | 
						|
    "query_timeout":-1,
 | 
						|
    "hotspot":false,
 | 
						|
    "index": [
 | 
						|
    ],
 | 
						|
    "read_consistency":0,
 | 
						|
    "join_order": [
 | 
						|
    ],
 | 
						|
    "merge_hint_idxs":"0, 0, 0, 0, 0, 0, 0, 0",
 | 
						|
    "hash_hint_idxs":"0, 0, 0, 0, 0, 0, 0, 0",
 | 
						|
    "nl_hint_idxs":"0, 0, 0, 0, 0, 0, 0, 0",
 | 
						|
    "part_hints": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "query_context": {
 | 
						|
    "param_num":1,
 | 
						|
    "fetch_cur_time":false,
 | 
						|
    "calculable_items": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "current_level":0,
 | 
						|
  "equal_sets": [
 | 
						|
  ],
 | 
						|
  "child_stmts": [
 | 
						|
  ]
 | 
						|
}
 | 
						|
***************   Case 7   ***************
 | 
						|
select * from t1 left join (t2 left join t3 on d+1=e) on t1.b=t3.b;
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511631158,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511631158,
 | 
						|
      "database_name":"join_on"
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "table_id":1099511631159,
 | 
						|
      "table_name":"t2",
 | 
						|
      "alias_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511631159,
 | 
						|
      "database_name":"join_on"
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "table_id":1099511631160,
 | 
						|
      "table_name":"t3",
 | 
						|
      "alias_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511631160,
 | 
						|
      "database_name":"join_on"
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
     {
 | 
						|
      "table_id":-2,
 | 
						|
      "table_type":3,
 | 
						|
      "join_type":"LEFT OUTER JOIN",
 | 
						|
      "left_table": {
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "table_name":"t1",
 | 
						|
        "alias_name":"",
 | 
						|
        "table_type":0,
 | 
						|
        "ref_id":1099511631158,
 | 
						|
        "database_name":"join_on"
 | 
						|
      },
 | 
						|
      "right_table": {
 | 
						|
        "table_id":-3,
 | 
						|
        "table_type":3,
 | 
						|
        "join_type":"LEFT OUTER JOIN",
 | 
						|
        "left_table": {
 | 
						|
          "table_id":1099511631159,
 | 
						|
          "table_name":"t2",
 | 
						|
          "alias_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511631159,
 | 
						|
          "database_name":"join_on"
 | 
						|
        },
 | 
						|
        "right_table": {
 | 
						|
          "table_id":1099511631160,
 | 
						|
          "table_name":"t3",
 | 
						|
          "alias_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511631160,
 | 
						|
          "database_name":"join_on"
 | 
						|
        }
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "column_name":"d",
 | 
						|
      "table_id":1099511631159,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "column_name":"e",
 | 
						|
      "table_id":1099511631160,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "column_name":"b",
 | 
						|
      "table_id":1099511631158,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "column_name":"b",
 | 
						|
      "table_id":1099511631160,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "column_name":"a",
 | 
						|
      "table_id":1099511631158,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "column_name":"c",
 | 
						|
      "table_id":1099511631159,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65519,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"a",
 | 
						|
      "expr_name":"a",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65518,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"b",
 | 
						|
      "expr_name":"b",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65517,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c",
 | 
						|
      "expr_name":"c",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65516,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"d",
 | 
						|
      "expr_name":"d",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65515,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"e",
 | 
						|
      "expr_name":"e",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65514,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"b",
 | 
						|
      "expr_name":"b",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":-2,
 | 
						|
      "is_join":true
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
  "for_update":false,
 | 
						|
  "wait":-1,
 | 
						|
  "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
 | 
						|
  },
 | 
						|
  "when": [
 | 
						|
  ],
 | 
						|
  "hint": {
 | 
						|
    "read_static":false,
 | 
						|
    "frozen_version":-1,
 | 
						|
    "topk_precision":-1,
 | 
						|
    "sharding_minimum_row_count":0,
 | 
						|
    "query_timeout":-1,
 | 
						|
    "hotspot":false,
 | 
						|
    "index": [
 | 
						|
    ],
 | 
						|
    "read_consistency":0,
 | 
						|
    "join_order": [
 | 
						|
    ],
 | 
						|
    "merge_hint_idxs":"0, 0, 0, 0, 0, 0, 0, 0",
 | 
						|
    "hash_hint_idxs":"0, 0, 0, 0, 0, 0, 0, 0",
 | 
						|
    "nl_hint_idxs":"0, 0, 0, 0, 0, 0, 0, 0",
 | 
						|
    "part_hints": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "query_context": {
 | 
						|
    "param_num":1,
 | 
						|
    "fetch_cur_time":false,
 | 
						|
    "calculable_items": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "current_level":0,
 | 
						|
  "equal_sets": [
 | 
						|
  ],
 | 
						|
  "child_stmts": [
 | 
						|
  ]
 | 
						|
}
 | 
						|
***************   Case 8   ***************
 | 
						|
select * from t1 left join (t2 left join t3 on d+1=b) on t1.b=t3.b;
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511631158,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511631158,
 | 
						|
      "database_name":"join_on"
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "table_id":1099511631159,
 | 
						|
      "table_name":"t2",
 | 
						|
      "alias_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511631159,
 | 
						|
      "database_name":"join_on"
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "table_id":1099511631160,
 | 
						|
      "table_name":"t3",
 | 
						|
      "alias_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511631160,
 | 
						|
      "database_name":"join_on"
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
     {
 | 
						|
      "table_id":-2,
 | 
						|
      "table_type":3,
 | 
						|
      "join_type":"LEFT OUTER JOIN",
 | 
						|
      "left_table": {
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "table_name":"t1",
 | 
						|
        "alias_name":"",
 | 
						|
        "table_type":0,
 | 
						|
        "ref_id":1099511631158,
 | 
						|
        "database_name":"join_on"
 | 
						|
      },
 | 
						|
      "right_table": {
 | 
						|
        "table_id":-3,
 | 
						|
        "table_type":3,
 | 
						|
        "join_type":"LEFT OUTER JOIN",
 | 
						|
        "left_table": {
 | 
						|
          "table_id":1099511631159,
 | 
						|
          "table_name":"t2",
 | 
						|
          "alias_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511631159,
 | 
						|
          "database_name":"join_on"
 | 
						|
        },
 | 
						|
        "right_table": {
 | 
						|
          "table_id":1099511631160,
 | 
						|
          "table_name":"t3",
 | 
						|
          "alias_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511631160,
 | 
						|
          "database_name":"join_on"
 | 
						|
        }
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "column_name":"d",
 | 
						|
      "table_id":1099511631159,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "column_name":"b",
 | 
						|
      "table_id":1099511631160,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "column_name":"b",
 | 
						|
      "table_id":1099511631158,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "column_name":"a",
 | 
						|
      "table_id":1099511631158,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "column_name":"c",
 | 
						|
      "table_id":1099511631159,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "column_name":"e",
 | 
						|
      "table_id":1099511631160,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65519,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"a",
 | 
						|
      "expr_name":"a",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65518,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"b",
 | 
						|
      "expr_name":"b",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65517,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c",
 | 
						|
      "expr_name":"c",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65516,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"d",
 | 
						|
      "expr_name":"d",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65515,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"e",
 | 
						|
      "expr_name":"e",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65514,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"b",
 | 
						|
      "expr_name":"b",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":-2,
 | 
						|
      "is_join":true
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
  "for_update":false,
 | 
						|
  "wait":-1,
 | 
						|
  "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
 | 
						|
  },
 | 
						|
  "when": [
 | 
						|
  ],
 | 
						|
  "hint": {
 | 
						|
    "read_static":false,
 | 
						|
    "frozen_version":-1,
 | 
						|
    "topk_precision":-1,
 | 
						|
    "sharding_minimum_row_count":0,
 | 
						|
    "query_timeout":-1,
 | 
						|
    "hotspot":false,
 | 
						|
    "index": [
 | 
						|
    ],
 | 
						|
    "read_consistency":0,
 | 
						|
    "join_order": [
 | 
						|
    ],
 | 
						|
    "merge_hint_idxs":"0, 0, 0, 0, 0, 0, 0, 0",
 | 
						|
    "hash_hint_idxs":"0, 0, 0, 0, 0, 0, 0, 0",
 | 
						|
    "nl_hint_idxs":"0, 0, 0, 0, 0, 0, 0, 0",
 | 
						|
    "part_hints": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "query_context": {
 | 
						|
    "param_num":1,
 | 
						|
    "fetch_cur_time":false,
 | 
						|
    "calculable_items": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "current_level":0,
 | 
						|
  "equal_sets": [
 | 
						|
  ],
 | 
						|
  "child_stmts": [
 | 
						|
  ]
 | 
						|
}
 | 
						|
***************   Case 9   ***************
 | 
						|
select * from t1 left join (t2 left join t3 on c+1=b) on t1.b=t3.b;
 | 
						|
{
 | 
						|
  "stmt_type":1,
 | 
						|
  "table": [
 | 
						|
     {
 | 
						|
      "table_id":1099511631158,
 | 
						|
      "table_name":"t1",
 | 
						|
      "alias_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511631158,
 | 
						|
      "database_name":"join_on"
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "table_id":1099511631159,
 | 
						|
      "table_name":"t2",
 | 
						|
      "alias_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511631159,
 | 
						|
      "database_name":"join_on"
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "table_id":1099511631160,
 | 
						|
      "table_name":"t3",
 | 
						|
      "alias_name":"",
 | 
						|
      "table_type":0,
 | 
						|
      "ref_id":1099511631160,
 | 
						|
      "database_name":"join_on"
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "joined_table": [
 | 
						|
     {
 | 
						|
      "table_id":-2,
 | 
						|
      "table_type":3,
 | 
						|
      "join_type":"LEFT OUTER JOIN",
 | 
						|
      "left_table": {
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "table_name":"t1",
 | 
						|
        "alias_name":"",
 | 
						|
        "table_type":0,
 | 
						|
        "ref_id":1099511631158,
 | 
						|
        "database_name":"join_on"
 | 
						|
      },
 | 
						|
      "right_table": {
 | 
						|
        "table_id":-3,
 | 
						|
        "table_type":3,
 | 
						|
        "join_type":"LEFT OUTER JOIN",
 | 
						|
        "left_table": {
 | 
						|
          "table_id":1099511631159,
 | 
						|
          "table_name":"t2",
 | 
						|
          "alias_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511631159,
 | 
						|
          "database_name":"join_on"
 | 
						|
        },
 | 
						|
        "right_table": {
 | 
						|
          "table_id":1099511631160,
 | 
						|
          "table_name":"t3",
 | 
						|
          "alias_name":"",
 | 
						|
          "table_type":0,
 | 
						|
          "ref_id":1099511631160,
 | 
						|
          "database_name":"join_on"
 | 
						|
        }
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "partition_express": [
 | 
						|
  ],
 | 
						|
  "column": [
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "column_name":"c",
 | 
						|
      "table_id":1099511631159,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "column_name":"b",
 | 
						|
      "table_id":1099511631160,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "column_name":"b",
 | 
						|
      "table_id":1099511631158,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "column_name":"a",
 | 
						|
      "table_id":1099511631158,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":17,
 | 
						|
      "column_name":"d",
 | 
						|
      "table_id":1099511631159,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "column_id":16,
 | 
						|
      "column_name":"e",
 | 
						|
      "table_id":1099511631160,
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0,
 | 
						|
      "is_autoincrement":false,
 | 
						|
      "cs_type":"binary",
 | 
						|
      "cs_level":5,
 | 
						|
      "is_nullable":true,
 | 
						|
      "auto_filled_timestamp":false,
 | 
						|
      "default_value": {
 | 
						|
        "NULL":"NULL"
 | 
						|
      },
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      }
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "select": [
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65519,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"a",
 | 
						|
      "expr_name":"a",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          1
 | 
						|
        ],
 | 
						|
        "table_id":1099511631158,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65518,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"b",
 | 
						|
      "expr_name":"b",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65517,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"c",
 | 
						|
      "expr_name":"c",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          2
 | 
						|
        ],
 | 
						|
        "table_id":1099511631159,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65516,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"d",
 | 
						|
      "expr_name":"d",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":16,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65515,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"e",
 | 
						|
      "expr_name":"e",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    },
 | 
						|
     {
 | 
						|
      "expression": {
 | 
						|
        "item_type":"T_REF_COLUMN",
 | 
						|
        "result_type": {
 | 
						|
          "meta": {
 | 
						|
            "type":"INT",
 | 
						|
            "collation":"binary",
 | 
						|
            "coercibility":"NUMERIC"
 | 
						|
          },
 | 
						|
          "accuracy": {
 | 
						|
            "length":11,
 | 
						|
            "precision":11,
 | 
						|
            "scale":0
 | 
						|
          }
 | 
						|
        },
 | 
						|
        "expr_info": [
 | 
						|
          "IS_COLUMN",
 | 
						|
          "CNT_COLUMN"
 | 
						|
        ],
 | 
						|
        "rel_id": [
 | 
						|
          3
 | 
						|
        ],
 | 
						|
        "table_id":1099511631160,
 | 
						|
        "column_id":17,
 | 
						|
        "expr_level":0
 | 
						|
      },
 | 
						|
      "table_id":-1,
 | 
						|
      "column_id":65514,
 | 
						|
      "is_alias":false,
 | 
						|
      "alias_name":"b",
 | 
						|
      "expr_name":"b",
 | 
						|
      "obj_type":"INT",
 | 
						|
      "length":11,
 | 
						|
      "precision":11,
 | 
						|
      "scale":0
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "distinct":false,
 | 
						|
  "from": [
 | 
						|
     {
 | 
						|
      "table_id":-2,
 | 
						|
      "is_join":true
 | 
						|
    }
 | 
						|
  ],
 | 
						|
  "where": [
 | 
						|
  ],
 | 
						|
  "group_by": [
 | 
						|
  ],
 | 
						|
  "having": [
 | 
						|
  ],
 | 
						|
  "aggr_func": [
 | 
						|
  ],
 | 
						|
  "order_by": [
 | 
						|
  ],
 | 
						|
  "limit":null,
 | 
						|
  "offset":null,
 | 
						|
  "for_update":false,
 | 
						|
  "wait":-1,
 | 
						|
  "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
 | 
						|
  },
 | 
						|
  "when": [
 | 
						|
  ],
 | 
						|
  "hint": {
 | 
						|
    "read_static":false,
 | 
						|
    "frozen_version":-1,
 | 
						|
    "topk_precision":-1,
 | 
						|
    "sharding_minimum_row_count":0,
 | 
						|
    "query_timeout":-1,
 | 
						|
    "hotspot":false,
 | 
						|
    "index": [
 | 
						|
    ],
 | 
						|
    "read_consistency":0,
 | 
						|
    "join_order": [
 | 
						|
    ],
 | 
						|
    "merge_hint_idxs":"0, 0, 0, 0, 0, 0, 0, 0",
 | 
						|
    "hash_hint_idxs":"0, 0, 0, 0, 0, 0, 0, 0",
 | 
						|
    "nl_hint_idxs":"0, 0, 0, 0, 0, 0, 0, 0",
 | 
						|
    "part_hints": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "query_context": {
 | 
						|
    "param_num":1,
 | 
						|
    "fetch_cur_time":false,
 | 
						|
    "calculable_items": [
 | 
						|
    ]
 | 
						|
  },
 | 
						|
  "current_level":0,
 | 
						|
  "equal_sets": [
 | 
						|
  ],
 | 
						|
  "child_stmts": [
 | 
						|
  ]
 | 
						|
}
 | 
						|
***************   Case 10   ***************
 | 
						|
drop database join_on
 | 
						|
{
 | 
						|
  "drop_database_arg":"tenant_id",
 | 
						|
  "database_name":"join_on",
 | 
						|
  "if_exist":false
 | 
						|
}
 |