patch 4.0
This commit is contained in:
wangzelin.wzl
@ -18,235 +18,429 @@
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#include "sql/rewrite/ob_transform_utils.h"
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#include "sql/ob_sql_context.h"
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namespace oceanbase {
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namespace oceanbase
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{
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namespace sql {
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namespace sql
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{
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typedef std::pair<uint64_t, uint64_t> JoinTableIdPair;
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struct MVDesc {
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uint64_t mv_tid_;
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uint64_t base_tid_;
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uint64_t dep_tid_;
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ObString table_name_;
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ObSelectStmt* mv_stmt_;
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class ObTransformPreProcess: public ObTransformRule
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{
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public:
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explicit ObTransformPreProcess(ObTransformerCtx *ctx)
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: ObTransformRule(ctx, TransMethod::POST_ORDER) { }
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virtual ~ObTransformPreProcess() {}
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MVDesc() : mv_tid_(OB_INVALID_ID), base_tid_(OB_INVALID_ID), dep_tid_(OB_INVALID_ID), mv_stmt_(NULL)
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{}
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TO_STRING_KV("mv_tid", mv_tid_, "base_tid", base_tid_, "dep_tid_", dep_tid_);
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virtual int transform_one_stmt(common::ObIArray<ObParentDMLStmt> &parent_stmts,
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ObDMLStmt *&stmt,
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bool &trans_happened) override;
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static int transform_expr(ObRawExprFactory &expr_factory,
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const ObSQLSessionInfo &session,
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ObRawExpr *&expr,
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bool &trans_happened);
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private:
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virtual int need_transform(const common::ObIArray<ObParentDMLStmt> &parent_stmts,
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const int64_t current_level,
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const ObDMLStmt &stmt,
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bool &need_trans) override;
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// used for transform in expr to or exprs
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struct DistinctObjMeta
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{
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ObObjType obj_type_;
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ObCollationType coll_type_;
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ObCollationLevel coll_level_;
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DistinctObjMeta(ObObjType obj_type, ObCollationType coll_type, ObCollationLevel coll_level)
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: obj_type_(obj_type), coll_type_(coll_type), coll_level_(coll_level)
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{
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if (!ObDatumFuncs::is_string_type(obj_type_)) {
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coll_type_ = CS_TYPE_MAX;
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coll_level_ = CS_LEVEL_INVALID;
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}
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}
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DistinctObjMeta()
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: obj_type_(common::ObMaxType), coll_type_(common::CS_TYPE_MAX) , coll_level_(CS_LEVEL_INVALID){}
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bool operator==(const DistinctObjMeta &other) const
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{
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bool cs_level_equal = lib::is_oracle_mode() ? true : (coll_level_ == other.coll_level_);
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return obj_type_ == other.obj_type_ && coll_type_ == other.coll_type_ && cs_level_equal;
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}
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TO_STRING_KV(K_(obj_type), K_(coll_type));
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};
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class ObTransformPreProcess : public ObTransformRule {
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public:
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explicit ObTransformPreProcess(ObTransformerCtx* ctx)
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: ObTransformRule(ctx, TransMethod::POST_ORDER), mock_table_set_(), origin_table_set_()
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{}
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virtual ~ObTransformPreProcess()
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{}
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/*
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* following functions are used to add all rowkey columns
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*/
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int add_all_rowkey_columns_to_stmt(ObDMLStmt *stmt, bool &trans_happened);
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int add_all_rowkey_columns_to_stmt(const ObTableSchema &table_schema,
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const TableItem &table_item,
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ObRawExprFactory &expr_factory,
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ObDMLStmt &stmt,
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ObIArray<ColumnItem> &column_items);
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virtual int transform_one_stmt(
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common::ObIArray<ObParentDMLStmt>& parent_stmts, ObDMLStmt*& stmt, bool& trans_happened) override;
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static int transform_expr(
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ObRawExprFactory& expr_factory, const ObSQLSessionInfo& session, ObRawExpr*& expr, bool& trans_happened);
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private:
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// used for transform in expr to or exprs
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struct DistinctObjMeta {
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ObObjType obj_type_;
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ObCollationType coll_type_;
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ObCollationLevel coll_level_;
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DistinctObjMeta(ObObjType obj_type, ObCollationType coll_type, ObCollationLevel coll_level)
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: obj_type_(obj_type), coll_type_(coll_type), coll_level_(coll_level)
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{
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if (!ObDatumFuncs::is_string_type(obj_type_) && !ObDatumFuncs::is_json(obj_type_)) {
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coll_type_ = CS_TYPE_MAX;
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coll_level_ = CS_LEVEL_INVALID;
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}
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}
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DistinctObjMeta() : obj_type_(common::ObMaxType), coll_type_(common::CS_TYPE_MAX), coll_level_(CS_LEVEL_INVALID)
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{}
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bool operator==(const DistinctObjMeta& other) const
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{
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bool cs_level_equal = share::is_oracle_mode() ? true : (coll_level_ == other.coll_level_);
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return obj_type_ == other.obj_type_ && coll_type_ == other.coll_type_ && cs_level_equal;
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}
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TO_STRING_KV(K_(obj_type), K_(coll_type));
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};
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/*
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* following functions are for grouping sets and multi rollup
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*/
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int transform_for_grouping_sets_and_multi_rollup(ObDMLStmt*& stmt, bool& trans_happened);
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int add_generated_table_as_temp_table(ObTransformerCtx* ctx, ObDMLStmt* stmt);
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int replace_with_set_stmt_view(
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ObSelectStmt* origin_stmt, ObSelectStmt* grouping_sets_view, ObSelectStmt*& union_stmt);
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int create_set_view_stmt(ObSelectStmt* origin_stmt, ObSelectStmt*& set_view_stmt);
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int create_select_list_from_grouping_sets(ObSelectStmt* stmt, common::ObIArray<ObGroupbyExpr>& groupby_exprs_list,
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int64_t cur_index, ObIArray<ObRawExpr*>& old_exprs, ObIArray<ObRawExpr*>& new_exprs);
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int64_t get_total_count_of_groupby_stmt(
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ObIArray<ObGroupingSetsItem>& grouping_sets_items, ObIArray<ObMultiRollupItem>& multi_rollup_items);
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int transform_for_grouping_sets_and_multi_rollup(ObDMLStmt *&stmt, bool &trans_happened);
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int add_generated_table_as_temp_table(ObTransformerCtx *ctx,
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ObDMLStmt *stmt);
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int replace_with_set_stmt_view(ObSelectStmt *origin_stmt,
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ObSelectStmt *grouping_sets_view,
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ObSelectStmt *&union_stmt);
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int create_set_view_stmt(ObSelectStmt *origin_stmt,
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ObSelectStmt *&set_view_stmt);
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int create_select_list_from_grouping_sets(ObSelectStmt *stmt,
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common::ObIArray<ObGroupbyExpr> &groupby_exprs_list,
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int64_t cur_index,
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ObIArray<ObRawExpr*> &old_exprs,
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ObIArray<ObRawExpr*> &new_exprs,
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int64_t origin_groupby_num = -1);
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int64_t get_total_count_of_groupby_stmt(ObIArray<ObGroupingSetsItem> &grouping_sets_items,
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ObIArray<ObMultiRollupItem> &multi_rollup_items);
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int get_groupby_exprs_list(ObIArray<ObGroupingSetsItem>& grouping_sets_items,
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ObIArray<ObMultiRollupItem>& multi_rollup_items, ObIArray<ObGroupbyExpr>& groupby_exprs_list);
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int get_groupby_exprs_list(ObIArray<ObGroupingSetsItem> &grouping_sets_items,
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ObIArray<ObMultiRollupItem> &multi_rollup_items,
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ObIArray<ObGroupbyExpr> &groupby_exprs_list);
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int expand_multi_rollup_items(
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ObIArray<ObMultiRollupItem>& multi_rollup_items, ObIArray<ObGroupbyExpr>& rollup_list_exprs);
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int expand_multi_rollup_items(ObIArray<ObMultiRollupItem> &multi_rollup_items,
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ObIArray<ObGroupbyExpr> &rollup_list_exprs);
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int combination_two_rollup_list(ObIArray<ObGroupbyExpr>& rollup_list_exprs1,
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ObIArray<ObGroupbyExpr>& rollup_list_exprs2, ObIArray<ObGroupbyExpr>& rollup_list_exprs);
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int combination_two_rollup_list(ObIArray<ObGroupbyExpr> &rollup_list_exprs1,
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ObIArray<ObGroupbyExpr> &rollup_list_exprs2,
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ObIArray<ObGroupbyExpr> &rollup_list_exprs);
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/*
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* following functions are for hierarchical query
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*/
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int transform_for_hierarchical_query(ObDMLStmt* stmt, bool& trans_happened);
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int transform_for_hierarchical_query(ObDMLStmt *stmt, bool &trans_happened);
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int create_connect_by_view(ObSelectStmt& stmt);
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int create_and_mock_join_view(ObSelectStmt& stmt);
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int classify_join_conds(
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ObSelectStmt& stmt, ObIArray<ObRawExpr*>& normal_join_conds, ObIArray<ObRawExpr*>& other_conds);
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int is_cond_in_one_from_item(ObSelectStmt& stmt, ObRawExpr* expr, bool& in_from_item);
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int extract_connect_by_related_exprs(ObSelectStmt& stmt, ObIArray<ObRawExpr*>& special_exprs);
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int extract_connect_by_related_exprs(ObRawExpr* expr, ObIArray<ObRawExpr*>& special_exprs);
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int pushdown_start_with_connect_by(ObSelectStmt& stmt, ObSelectStmt& view);
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int replace_rownum_expr(ObSelectStmt& stmt, ObIArray<ObRawExpr*>& exprs);
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int check_has_rownum(ObIArray<ObRawExpr*>& exprs, bool& has_rownum);
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/*
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* following functions are for materialized view
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/**
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* @brief create_connect_by_view
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* 为层次查询构建一个spj，封装所有与层次查询相关的计算
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* 包括所有的from item、where condition内的join条件
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* 外层引用的connect by相关运算及伪列作为视图投影
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*/
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int transform_for_materialized_view(ObDMLStmt* stmt, bool& trans_happened);
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uint64_t get_real_tid(uint64_t tid, ObSelectStmt& stmt);
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int is_col_in_mv(uint64_t tid, uint64_t cid, MVDesc mv_desc, bool& result);
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int is_all_column_covered(ObSelectStmt& stmt, MVDesc mv_desc, const JoinTableIdPair& idp, bool& result);
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int expr_equal(
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ObSelectStmt* select_stmt, const ObRawExpr* r1, ObSelectStmt* mv_stmt, const ObRawExpr* r2, bool& result);
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int check_where_condition_covered(
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ObSelectStmt* select_stmt, ObSelectStmt* mv_stmt, bool& result, ObBitSet<>& expr_idx);
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int get_column_id(uint64_t mv_tid, uint64_t tid, uint64_t cid, uint64_t& mv_cid);
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int rewrite_column_id(ObSelectStmt* select_stmt, MVDesc mv_desc, const JoinTableIdPair& idp);
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int rewrite_column_id2(ObSelectStmt* select_stmt);
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int check_can_transform(
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ObSelectStmt*& select_stmt, MVDesc mv_desc, bool& result, JoinTableIdPair& idp, ObBitSet<>& expr_idx);
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int reset_table_item(ObSelectStmt* select_stmt, uint64_t mv_tid, uint64_t base_tid, const JoinTableIdPair& idp);
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int reset_where_condition(ObSelectStmt* select_stmt, ObBitSet<>& expr_idx);
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int reset_from_item(ObSelectStmt* select_stmt, uint64_t mv_tid, const JoinTableIdPair& idp);
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int inner_transform(ObDMLStmt*& stmt, ObIArray<MVDesc>& mv_array, bool& trans_happened);
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int get_all_related_mv_array(ObDMLStmt*& stmt, ObIArray<MVDesc>& mv_array);
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int get_view_stmt(const share::schema::ObTableSchema& index_schema, ObSelectStmt*& view_stmt);
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int reset_part_expr(ObSelectStmt* select_stmt, uint64_t mv_tid, const JoinTableIdPair& idp);
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int is_rowkey_equal_covered(
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ObSelectStmt* select_stmt, uint64_t mv_tid, uint64_t rowkey_tid, uint64_t base_or_dep_tid, bool& is_covered);
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int get_join_tid_cid(
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uint64_t tid, uint64_t cid, uint64_t& out_tid, uint64_t& out_cid, const share::schema::ObTableSchema& mv_schema);
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int create_connect_by_view(ObSelectStmt &stmt);
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/*
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* follow functions are used for eliminate having
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/**
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* @brief create_and_mock_join_view
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* 将所有的from item及其相关的连接谓词分离成一个spj
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* 并且copy一份构成connect by的右孩子节点
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*/
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int eliminate_having(ObDMLStmt* stmt, bool& trans_happened);
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int create_and_mock_join_view(ObSelectStmt &stmt);
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/*
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* following functions are used to replace func is serving tenant
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/**
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* @brirf classify_join_conds
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* 将stmt的where condition分成普通的连接谓词和其他谓词
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* 普通的连接谓词：引用两张表以上的谓词，并且不含有LEVEL、CONNECT_BY_ISLEAF、
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* CONNECT_BY_ISCYCLE、PRIOR、CONNECT_BY_ROOT
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*/
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int replace_func_is_serving_tenant(ObDMLStmt*& stmt, bool& trans_happened);
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int recursive_replace_func_is_serving_tenant(ObDMLStmt& stmt, ObRawExpr*& cond_expr, bool& trans_happened);
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int calc_const_raw_expr_and_get_int(const ObStmt& stmt, ObRawExpr* const_expr, ObExecContext& exec_ctx,
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ObSQLSessionInfo* session, ObIAllocator& allocator, int64_t& result);
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int calc_const_raw_expr(const ObStmt& stmt, ObRawExpr* const_expr, ObExprCtx& expr_ctx, ObPhysicalPlan& phy_plan,
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ObIAllocator& allocator, ObObj& result);
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int classify_join_conds(ObSelectStmt &stmt,
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ObIArray<ObRawExpr *> &normal_join_conds,
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ObIArray<ObRawExpr *> &other_conds);
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int transform_for_merge_into(ObDMLStmt* stmt, bool& trans_happened);
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int is_cond_in_one_from_item(ObSelectStmt &stmt, ObRawExpr *expr, bool &in_from_item);
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/*
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* following functions are used for temporary and se table
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*/
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int transform_for_temporary_table(ObDMLStmt*& stmt, bool& trans_happened);
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int add_filter_for_temporary_table(ObDMLStmt& stmt, const TableItem& table_item);
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int collect_all_tableitem(ObDMLStmt* stmt, TableItem* table_item, common::ObArray<TableItem*>& table_item_list);
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int extract_connect_by_related_exprs(ObSelectStmt &stmt, ObIArray<ObRawExpr*> &special_exprs);
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int transform_exprs(ObDMLStmt* stmt, bool& trans_happened);
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int transform_for_nested_aggregate(ObDMLStmt*& stmt, bool& trans_happened);
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int generate_child_level_aggr_stmt(ObSelectStmt* stmt, ObSelectStmt*& sub_stmt);
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int get_first_level_output_exprs(ObSelectStmt* sub_stmt, common::ObIArray<ObRawExpr*>& inner_aggr_exprs);
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int generate_parent_level_aggr_stmt(ObSelectStmt*& stmt, ObSelectStmt* sub_stmt);
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int remove_nested_aggr_exprs(ObSelectStmt* stmt);
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int construct_column_items_from_exprs(const ObIArray<ObRawExpr*>& column_exprs, ObIArray<ColumnItem>& column_items);
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int extract_connect_by_related_exprs(ObRawExpr *expr, ObIArray<ObRawExpr*> &special_exprs);
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uint64_t get_real_tid(uint64_t tid, ObSelectStmt &stmt);
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/*
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* follow functions are used for eliminate having
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*/
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int eliminate_having(ObDMLStmt *stmt, bool &trans_happened);
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/*
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* following functions are used to replace func is serving tenant
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*/
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int replace_func_is_serving_tenant(ObDMLStmt *&stmt, bool &trans_happened);
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int recursive_replace_func_is_serving_tenant(ObDMLStmt &stmt,
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ObRawExpr *&cond_expr,
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bool &trans_happened);
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int calc_const_raw_expr_and_get_int(const ObStmt &stmt,
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ObRawExpr *const_expr,
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ObExecContext &exec_ctx,
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ObSQLSessionInfo *session,
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ObIAllocator &allocator,
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int64_t &result);
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int transform_for_merge_into(ObDMLStmt *stmt, bool &trans_happened);
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/*
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* following functions are used for temporary and se table
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*/
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int transform_for_temporary_table(ObDMLStmt *&stmt, bool &trans_happened);
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int add_filter_for_temporary_table(ObDMLStmt &stmt,
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const TableItem &table_item);
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int collect_all_tableitem(ObDMLStmt *stmt,
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TableItem *table_item,
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common::ObArray<TableItem*> &table_item_list);
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int transform_exprs(ObDMLStmt *stmt, bool &trans_happened);
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int transform_for_nested_aggregate(ObDMLStmt *&stmt, bool &trans_happened);
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int generate_child_level_aggr_stmt(ObSelectStmt *stmt, ObSelectStmt *&sub_stmt);
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int get_first_level_output_exprs(ObSelectStmt *sub_stmt,
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common::ObIArray<ObRawExpr*>& inner_aggr_exprs);
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int generate_parent_level_aggr_stmt(ObSelectStmt *&stmt, ObSelectStmt *sub_stmt);
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int remove_nested_aggr_exprs(ObSelectStmt *stmt);
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int construct_column_items_from_exprs(const ObIArray<ObRawExpr*> &column_exprs,
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ObIArray<ColumnItem> &column_items);
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/*
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* following functions are used to transform in_expr to or_expr
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*/
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static int transform_in_or_notin_expr_with_row(ObRawExprFactory& expr_factory, const ObSQLSessionInfo& session,
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const bool is_in_expr, ObRawExpr*& in_expr, bool& trans_happened);
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static int transform_in_or_notin_expr_with_row(ObRawExprFactory &expr_factory,
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const ObSQLSessionInfo &session,
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const bool is_in_expr,
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ObRawExpr *&in_expr,
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bool &trans_happened);
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static int transform_in_or_notin_expr_without_row(ObRawExprFactory& expr_factory, const ObSQLSessionInfo& session,
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const bool is_in_expr, ObRawExpr*& in_epxr, bool& trans_happened);
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static int transform_in_or_notin_expr_without_row(ObRawExprFactory &expr_factory,
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const ObSQLSessionInfo &session,
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const bool is_in_expr,
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ObRawExpr *&in_epxr,
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bool &trans_happened);
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||||
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static int create_partial_expr(ObRawExprFactory &expr_factory, ObRawExpr *left_expr,
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ObIArray<ObRawExpr *> &same_type_exprs, const bool is_in_expr, ObIArray<ObRawExpr *> &transed_in_exprs);
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||||
static int create_partial_expr(ObRawExprFactory &expr_factory,
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ObRawExpr *left_expr,
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ObIArray<ObRawExpr*> &same_type_exprs,
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const bool is_in_expr,
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ObIArray<ObRawExpr*> &transed_in_exprs);
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||||
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||||
/*
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||||
* following functions are used to transform arg_case_expr to case_expr
|
||||
*/
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||||
static int transform_arg_case_recursively(
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||||
ObRawExprFactory& expr_factory, const ObSQLSessionInfo& session, ObRawExpr*& expr, bool& trans_happened);
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||||
static int transform_arg_case_expr(
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||||
ObRawExprFactory& expr_factory, const ObSQLSessionInfo& session, ObRawExpr*& expr, bool& trans_happened);
|
||||
static int create_equal_expr_for_case_expr(ObRawExprFactory& expr_factory, const ObSQLSessionInfo& session,
|
||||
ObRawExpr* arg_expr, ObRawExpr* when_expr, const ObExprResType& case_res_type, ObOpRawExpr*& equal_expr);
|
||||
static int add_row_type_to_array_no_dup(
|
||||
common::ObIArray<ObSEArray<DistinctObjMeta, 4>>& row_type_array, const ObSEArray<DistinctObjMeta, 4>& row_type);
|
||||
static int transform_arg_case_recursively(ObRawExprFactory &expr_factory,
|
||||
const ObSQLSessionInfo &session,
|
||||
ObRawExpr *&expr,
|
||||
bool &trans_happened);
|
||||
static int transform_arg_case_expr(ObRawExprFactory &expr_factory,
|
||||
const ObSQLSessionInfo &session,
|
||||
ObRawExpr *&expr,
|
||||
bool &trans_happened);
|
||||
static int create_equal_expr_for_case_expr(ObRawExprFactory &expr_factory,
|
||||
const ObSQLSessionInfo &session,
|
||||
ObRawExpr *arg_expr,
|
||||
ObRawExpr *when_expr,
|
||||
const ObExprResType &case_res_type,
|
||||
ObOpRawExpr *&equal_expr);
|
||||
static int add_row_type_to_array_no_dup(common::ObIArray<ObSEArray<DistinctObjMeta, 4>> &row_type_array,
|
||||
const ObSEArray<DistinctObjMeta, 4> &row_type);
|
||||
|
||||
static bool is_same_row_type(
|
||||
const common::ObIArray<DistinctObjMeta>& left, const common::ObIArray<DistinctObjMeta>& right);
|
||||
static bool is_same_row_type(const common::ObIArray<DistinctObjMeta> &left,
|
||||
const common::ObIArray<DistinctObjMeta> &right);
|
||||
|
||||
static int get_final_transed_or_and_expr(ObRawExprFactory& expr_factory, const ObSQLSessionInfo& session,
|
||||
const bool is_in_expr, common::ObIArray<ObRawExpr*>& transed_in_exprs, ObRawExpr*& final_or_expr);
|
||||
static int get_final_transed_or_and_expr(
|
||||
ObRawExprFactory &expr_factory,
|
||||
const ObSQLSessionInfo &session,
|
||||
const bool is_in_expr,
|
||||
common::ObIArray<ObRawExpr *> &transed_in_exprs,
|
||||
ObRawExpr *&final_or_expr);
|
||||
|
||||
static int check_and_transform_in_or_notin(
|
||||
ObRawExprFactory& expr_factory, const ObSQLSessionInfo& session, ObRawExpr*& in_expr, bool& trans_happened);
|
||||
static int replace_in_or_notin_recursively(
|
||||
ObRawExprFactory& expr_factory, const ObSQLSessionInfo& session, ObRawExpr*& root_expr, bool& trans_happened);
|
||||
int transformer_aggr_expr(ObDMLStmt* stmt, bool& trans_happened);
|
||||
int transform_rownum_as_limit_offset(
|
||||
const ObIArray<ObParentDMLStmt>& parent_stmts, ObDMLStmt*& stmt, bool& trans_happened);
|
||||
int transform_common_rownum_as_limit(ObDMLStmt*& stmt, bool& trans_happened);
|
||||
int try_transform_common_rownum_as_limit(ObDMLStmt* stmt, ObRawExpr*& limit_expr);
|
||||
int transform_generated_rownum_as_limit(
|
||||
const ObIArray<ObParentDMLStmt>& parent_stmts, ObDMLStmt* stmt, bool& trans_happened);
|
||||
int try_transform_generated_rownum_as_limit_offset(
|
||||
ObDMLStmt* upper_stmt, ObSelectStmt* select_stmt, ObRawExpr*& limit_expr, ObRawExpr*& offset_expr);
|
||||
int transform_generated_rownum_eq_cond(ObRawExpr* eq_value, ObRawExpr*& limit_expr, ObRawExpr*& offset_expr);
|
||||
int expand_grouping_sets_items(
|
||||
common::ObIArray<ObGroupingSetsItem>& grouping_sets_items, common::ObIArray<ObGroupbyExpr>& grouping_sets_exprs);
|
||||
int replace_select_and_having_exprs(
|
||||
ObSelectStmt* select_stmt, ObIArray<ObRawExpr*>& old_exprs, ObIArray<ObRawExpr*>& new_exprs);
|
||||
int replace_stmt_special_exprs(ObSelectStmt* select_stmt, ObRawExpr*& expr, common::ObIArray<ObRawExpr*>& old_exprs,
|
||||
common::ObIArray<ObRawExpr*>& new_exprs, bool ignore_const = false);
|
||||
bool is_select_expr_in_other_groupby_exprs(
|
||||
ObRawExpr* expr, ObIArray<ObGroupbyExpr>& groupby_exprs_list, int64_t cur_index);
|
||||
bool is_expr_in_select_item(ObIArray<SelectItem>& select_items, ObRawExpr* expr);
|
||||
int extract_select_expr_and_replace_expr(ObRawExpr* expr, ObIArray<ObRawExpr*>& groupby_exprs,
|
||||
ObIArray<ObRawExpr*>& rollup_exprs, ObIArray<ObAggFunRawExpr*>& aggr_items,
|
||||
ObIArray<ObGroupbyExpr>& groupby_exprs_list, int64_t cur_index, ObIArray<SelectItem>& select_items,
|
||||
ObIArray<ObRawExpr*>& old_exprs, ObIArray<ObRawExpr*>& new_exprs, ObRelIds& rel_ids);
|
||||
int extract_stmt_replace_expr(ObSelectStmt* select_stmt, ObIArray<ObRawExpr*>& old_exprs);
|
||||
int extract_replace_expr_from_select_expr(
|
||||
ObRawExpr* expr, ObSelectStmt* select_stmt, ObIArray<ObRawExpr*>& old_exprs);
|
||||
static int check_and_transform_in_or_notin(ObRawExprFactory &expr_factory,
|
||||
const ObSQLSessionInfo &session,
|
||||
ObRawExpr *&in_expr,
|
||||
bool &trans_happened);
|
||||
static int replace_in_or_notin_recursively(ObRawExprFactory &expr_factory,
|
||||
const ObSQLSessionInfo &session,
|
||||
ObRawExpr *&root_expr,
|
||||
bool &trans_happened);
|
||||
int transformer_aggr_expr(ObDMLStmt *stmt, bool &trans_happened);
|
||||
int transform_rownum_as_limit_offset(const ObIArray<ObParentDMLStmt> &parent_stmts,
|
||||
ObDMLStmt *&stmt,
|
||||
bool &trans_happened);
|
||||
int transform_common_rownum_as_limit(ObDMLStmt *&stmt, bool &trans_happened);
|
||||
int try_transform_common_rownum_as_limit(ObDMLStmt *stmt, ObRawExpr *&limit_expr);
|
||||
int transform_generated_rownum_as_limit(const ObIArray<ObParentDMLStmt> &parent_stmts,
|
||||
ObDMLStmt *stmt,
|
||||
bool &trans_happened);
|
||||
int try_transform_generated_rownum_as_limit_offset(ObDMLStmt *upper_stmt,
|
||||
ObSelectStmt *select_stmt,
|
||||
ObRawExpr *&limit_expr,
|
||||
ObRawExpr *&offset_expr);
|
||||
int transform_generated_rownum_eq_cond(ObRawExpr *eq_value,
|
||||
ObRawExpr *&limit_expr,
|
||||
ObRawExpr *&offset_expr);
|
||||
int expand_grouping_sets_items(common::ObIArray<ObGroupingSetsItem> &grouping_sets_items,
|
||||
common::ObIArray<ObGroupbyExpr> &grouping_sets_exprs);
|
||||
int replace_select_and_having_exprs(ObSelectStmt *select_stmt,
|
||||
ObIArray<ObRawExpr*> &old_exprs,
|
||||
ObIArray<ObRawExpr*> &new_exprs,
|
||||
ObIArray<ObGroupbyExpr> &groupby_exprs_list,
|
||||
int64_t cur_index = -1,
|
||||
int64_t origin_groupby_num = -1);
|
||||
int replace_stmt_special_exprs(ObSelectStmt *select_stmt,
|
||||
ObRawExpr *&expr,
|
||||
common::ObIArray<ObRawExpr*> &old_exprs,
|
||||
common::ObIArray<ObRawExpr*> &new_exprs,
|
||||
ObIArray<ObGroupbyExpr> &groupby_exprs_list,
|
||||
bool ignore_const = false,
|
||||
int64_t cur_index = -1,
|
||||
int64_t origin_groupby_num = -1);
|
||||
int replace_aggr_exprs_in_select_and_having(ObRawExpr *&expr,
|
||||
ObIArray<ObRawExpr*> &groupby_exprs,
|
||||
ObIArray<ObRawExpr*> &rollup_exprs,
|
||||
ObIArray<ObAggFunRawExpr*> &aggr_items,
|
||||
ObIArray<ObGroupbyExpr> &groupby_exprs_list,
|
||||
int64_t cur_index,
|
||||
ObIArray<ObRawExpr*> &old_exprs,
|
||||
ObIArray<ObRawExpr*> &new_exprs,
|
||||
ObRelIds &rel_ids,
|
||||
int64_t origin_groupby_num = -1,
|
||||
bool using_rel_ids = true);
|
||||
int calc_grouping_in_grouping_sets(ObRawExpr *&expr,
|
||||
ObIArray<ObRawExpr*> &groupby_exprs,
|
||||
ObIArray<ObRawExpr*> &rollup_exprs,
|
||||
ObIArray<ObAggFunRawExpr*> &aggr_items,
|
||||
ObIArray<ObRawExpr*> &old_exprs,
|
||||
ObIArray<ObRawExpr*> &new_exprs,
|
||||
ObRelIds &rel_ids,
|
||||
bool using_rel_ids = true);
|
||||
int calc_grouping_id_in_grouping_sets(ObRawExpr *&expr,
|
||||
ObIArray<ObRawExpr*> &groupby_exprs,
|
||||
ObIArray<ObRawExpr*> &rollup_exprs,
|
||||
ObIArray<ObAggFunRawExpr*> &aggr_items,
|
||||
ObIArray<ObRawExpr*> &old_exprs,
|
||||
ObIArray<ObRawExpr*> &new_exprs,
|
||||
ObRelIds &rel_ids,
|
||||
bool using_rel_ids = true);
|
||||
int calc_group_id_in_grouping_sets(ObRawExpr *&expr,
|
||||
ObIArray<ObRawExpr*> &groupby_exprs,
|
||||
ObIArray<ObRawExpr*> &rollup_exprs,
|
||||
ObIArray<ObAggFunRawExpr*> &aggr_items,
|
||||
ObIArray<ObGroupbyExpr> &groupby_exprs_list,
|
||||
int64_t cur_index,
|
||||
ObIArray<ObRawExpr*> &old_exprs,
|
||||
ObIArray<ObRawExpr*> &new_exprs,
|
||||
ObRelIds &rel_ids,
|
||||
int64_t origin_groupby_num = -1,
|
||||
bool using_rel_ids = true);
|
||||
bool is_select_expr_in_other_groupby_exprs(ObRawExpr *expr,
|
||||
ObIArray<ObGroupbyExpr> &groupby_exprs_list,
|
||||
int64_t cur_index);
|
||||
bool is_expr_in_select_item(ObIArray<SelectItem> &select_items,
|
||||
ObRawExpr *expr);
|
||||
int extract_select_expr_and_replace_expr(ObRawExpr *expr,
|
||||
ObIArray<ObRawExpr*> &groupby_exprs,
|
||||
ObIArray<ObRawExpr*> &rollup_exprs,
|
||||
ObIArray<ObAggFunRawExpr*> &aggr_items,
|
||||
ObIArray<ObGroupbyExpr> &groupby_exprs_list,
|
||||
int64_t cur_index,
|
||||
ObIArray<SelectItem> &select_items,
|
||||
ObIArray<ObRawExpr*> &old_exprs,
|
||||
ObIArray<ObRawExpr*> &new_exprs,
|
||||
ObRelIds &rel_ids,
|
||||
int64_t origin_groupby_num = -1);
|
||||
int extract_stmt_replace_expr(ObSelectStmt *select_stmt, ObIArray<ObRawExpr*> &old_exprs);
|
||||
int extract_replace_expr_from_select_expr(ObRawExpr *expr,
|
||||
ObSelectStmt *select_stmt,
|
||||
ObIArray<ObRawExpr*> &old_exprs);
|
||||
|
||||
int replace_group_id_in_stmt(ObSelectStmt *stmt);
|
||||
int replace_group_id_in_expr_recursive(ObRawExpr *&expr);
|
||||
/*
|
||||
* following functions are used for transform rowid in subquery
|
||||
*/
|
||||
int transformer_rowid_expr(ObDMLStmt *stmt, bool &trans_happened);
|
||||
|
||||
int do_transform_rowid_expr(ObDMLStmt &stmt,
|
||||
ObColumnRefRawExpr *empty_rowid_col_expr,
|
||||
ObRawExpr *&new_rowid_expr);
|
||||
int recursive_generate_rowid_select_item(ObSelectStmt *select_stmt,
|
||||
ObRawExpr *&rowid_expr);
|
||||
int check_can_gen_rowid_on_this_table(ObSelectStmt *select_stmt,
|
||||
TableItem *this_item,
|
||||
bool &can_gen_rowid);
|
||||
int build_rowid_expr(ObSelectStmt *stmt,
|
||||
TableItem *table_item,
|
||||
ObSysFunRawExpr *&rowid_expr);
|
||||
int create_rowid_item_for_stmt(ObDMLStmt *select_stmt,
|
||||
TableItem *table_item,
|
||||
ObRawExpr *&rowid_expr);
|
||||
int add_rowid_constraint(ObDMLStmt &stmt);
|
||||
|
||||
int check_stmt_contain_param_expr(ObDMLStmt *stmt, bool &contain);
|
||||
|
||||
int check_stmt_can_batch(ObDMLStmt *batch_stmt, bool &can_batch);
|
||||
|
||||
int check_contain_param_expr(ObDMLStmt *stmt, TableItem *table_item, bool &contain_param);
|
||||
|
||||
int transform_for_upd_del_batch_stmt(ObDMLStmt *batch_stmt,
|
||||
ObSelectStmt* inner_view_stmt,
|
||||
bool &trans_happened);
|
||||
int create_inner_view_stmt(ObDMLStmt *batch_stmt, ObSelectStmt*& inner_view_stmt);
|
||||
|
||||
int transform_for_ins_batch_stmt(ObDMLStmt *batch_stmt, bool &trans_happened);
|
||||
int transform_for_batch_stmt(ObDMLStmt *batch_stmt, bool &trans_happened);
|
||||
|
||||
int formalize_batch_stmt(ObDMLStmt *batch_stmt,
|
||||
ObSelectStmt* inner_view_stmt,
|
||||
const ObIArray<ObRawExpr *> &other_exprs,
|
||||
bool &trans_happened);
|
||||
|
||||
int mock_select_list_for_upd_del(ObDMLStmt &batch_stmt, ObSelectStmt &inner_view);
|
||||
|
||||
int mock_select_list_for_ins_values(ObDMLStmt &batch_stmt,
|
||||
ObSelectStmt &inner_view,
|
||||
bool &trans_happened);
|
||||
|
||||
int mock_select_list_for_ins_select(ObDMLStmt &batch_stmt,
|
||||
ObSelectStmt &inner_view,
|
||||
bool &trans_happened);
|
||||
|
||||
int create_stmt_id_expr(ObPseudoColumnRawExpr *&stmt_id_expr);
|
||||
|
||||
int create_params_expr(ObPseudoColumnRawExpr *&pseudo_param_expr,
|
||||
ObRawExpr *origin_param_expr,
|
||||
int64_t name_id);
|
||||
int create_params_exprs(ObDMLStmt &batch_stmt,
|
||||
ObIArray<ObRawExpr*> ¶ms_exprs);
|
||||
|
||||
int mock_select_list_for_inner_view(ObDMLStmt &batch_stmt, ObSelectStmt &inner_view);
|
||||
|
||||
int transform_full_outer_join(ObDMLStmt *&stmt, bool &trans_happened);
|
||||
|
||||
int check_join_condition(ObDMLStmt *stmt,
|
||||
JoinedTable *table,
|
||||
bool &has_equal,
|
||||
bool &has_subquery);
|
||||
|
||||
/**
|
||||
* @brief recursively_eliminate_full_join
|
||||
* 以左-右-后的方式后续遍历from item及semi from item中的joined_table结构
|
||||
*/
|
||||
int recursively_eliminate_full_join(ObDMLStmt &stmt,
|
||||
TableItem &table_item,
|
||||
bool &trans_happened);
|
||||
|
||||
/**
|
||||
* @brief expand_full_outer_join
|
||||
* for select stmt contains a single full outer join, expand to left join union all anti join
|
||||
*/
|
||||
int expand_full_outer_join(ObSelectStmt *&ref_query);
|
||||
|
||||
int create_select_items_for_semi_join(ObDMLStmt *stmt,
|
||||
TableItem *from_table_item,
|
||||
const ObIArray<SelectItem> &select_items,
|
||||
ObIArray<SelectItem> &output_select_items);
|
||||
|
||||
int switch_left_outer_to_semi_join(ObSelectStmt *&sub_stmt,
|
||||
JoinedTable *joined_table,
|
||||
const ObIArray<SelectItem> &select_items);
|
||||
|
||||
int extract_idx_from_table_items(ObDMLStmt *sub_stmt,
|
||||
const TableItem *table_item,
|
||||
ObSqlBitSet<> &rel_ids);
|
||||
private:
|
||||
ObRelIds mock_table_set_;
|
||||
ObRelIds origin_table_set_;
|
||||
DISALLOW_COPY_AND_ASSIGN(ObTransformPreProcess);
|
||||
};
|
||||
|
||||
} // namespace sql
|
||||
} // namespace oceanbase
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* OB_TRANSFORM_PRE_PROCESS_H_ */
|
||||
|
||||
Reference in New Issue
Block a user