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[SCN REFACTOR] replace flash back snapshot and remove read snapshot session

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This commit is contained in:
wangt1xiuyi
2022-11-28 01:54:50 +00:00
committed by ob-robot
parent c4c13f6296
commit 11485d6a98
268 changed files with 6763 additions and 7737 deletions
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26
src/sql/optimizer/ob_select_log_plan.h
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@ -62,12 +62,14 @@ private:
// @brief Get all the group by exprs, rollup exprs and their directions.
int get_groupby_rollup_exprs(const ObLogicalOperator *op,
common::ObIArray<ObRawExpr *> &reduce_exprs,
common::ObIArray<ObRawExpr *> &group_by_exprs,
common::ObIArray<ObRawExpr *> &rollup_exprs,
common::ObIArray<ObOrderDirection> &group_directions,
common::ObIArray<ObOrderDirection> &rollup_directions);
int candi_allocate_normal_group_by(const ObIArray<ObRawExpr*> &group_by_exprs,
int candi_allocate_normal_group_by(const ObIArray<ObRawExpr*> &reduce_exprs,
const ObIArray<ObRawExpr*> &group_by_exprs,
const ObIArray<ObOrderDirection> &group_directions,
const ObIArray<ObRawExpr*> &rollup_exprs,
const ObIArray<ObOrderDirection> &rollup_directions,
@ -80,7 +82,8 @@ private:
const bool ignore_hint,
bool &use_hash_valid,
bool &use_merge_valid);
int candi_allocate_normal_group_by(const ObIArray<ObRawExpr*> &group_by_exprs,
int candi_allocate_normal_group_by(const ObIArray<ObRawExpr*> &reduce_exprs,
const ObIArray<ObRawExpr*> &group_by_exprs,
const ObIArray<ObOrderDirection> &group_directions,
const ObIArray<ObRawExpr*> &rollup_exprs,
const ObIArray<ObOrderDirection> &rollup_directions,
@ -91,7 +94,8 @@ private:
const bool ignore_hint,
ObIArray<CandidatePlan> &groupby_plans);
int candi_allocate_three_stage_group_by(const ObIArray<ObRawExpr*> &group_by_exprs,
int candi_allocate_three_stage_group_by(const ObIArray<ObRawExpr*> &reduce_exprs,
const ObIArray<ObRawExpr*> &group_by_exprs,
const ObIArray<ObOrderDirection> &group_directions,
const ObIArray<ObRawExpr*> &rollup_exprs,
const ObIArray<ObOrderDirection> &rollup_directions,
@ -101,7 +105,8 @@ private:
GroupingOpHelper &groupby_helper,
ObIArray<CandidatePlan> &groupby_plans);
int create_hash_group_plan(const ObIArray<ObRawExpr*> &group_by_exprs,
int create_hash_group_plan(const ObIArray<ObRawExpr*> &reduce_exprs,
const ObIArray<ObRawExpr*> &group_by_exprs,
const ObIArray<ObRawExpr*> &rollup_exprs,
const ObIArray<ObAggFunRawExpr*> &aggr_items,
const ObIArray<ObRawExpr*> &having_exprs,
@ -128,7 +133,7 @@ private:
int64_t topk_precision);
int should_create_rollup_pushdown_plan(ObLogicalOperator *top,
const ObIArray<ObRawExpr *> &groupby_exprs,
const ObIArray<ObRawExpr *> &reduce_exprs,
const ObIArray<ObRawExpr *> &rollup_exprs,
GroupingOpHelper &groupby_helper,
bool &is_needed);
@ -140,7 +145,8 @@ private:
GroupingOpHelper &groupby_helper,
ObLogicalOperator *&top);
int create_merge_group_plan(const ObIArray<ObRawExpr*> &group_by_exprs,
int create_merge_group_plan(const ObIArray<ObRawExpr*> &reduce_exprs,
const ObIArray<ObRawExpr*> &group_by_exprs,
const ObIArray<ObOrderDirection> &group_directions,
const ObIArray<ObRawExpr*> &rollup_exprs,
const ObIArray<ObOrderDirection> &rollup_directions,
@ -168,14 +174,17 @@ private:
// @brief Get all the distinct exprs
int get_distinct_exprs(const ObLogicalOperator *top,
common::ObIArray <ObRawExpr *> &reduce_exprs,
common::ObIArray <ObRawExpr *> &distinct_exprs);
int create_hash_distinct_plan(ObLogicalOperator *&top,
GroupingOpHelper &distinct_helper,
ObIArray<ObRawExpr*> &reduce_exprs,
ObIArray<ObRawExpr*> &distinct_exprs);
int create_merge_distinct_plan(ObLogicalOperator *&top,
GroupingOpHelper &distinct_helper,
ObIArray<ObRawExpr*> &reduce_exprs,
ObIArray<ObRawExpr*> &distinct_exprs,
ObIArray<ObOrderDirection> &directions,
bool &is_plan_valid,
@ -247,6 +256,11 @@ private:
int get_pure_set_exprs(ObIArray<ObRawExpr*> &pure_set_exprs);
int get_allowed_branch_order(const bool ignore_hint,
const ObSelectStmt::SetOperator set_op,
bool &no_swap,
bool &swap);
/**
* @brief create_hash_set
* create hash-based set operation