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[CP] add with_subquery, generate_with_clause, group by placement parameters

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This commit is contained in:
zzg19950727
2023-05-10 09:38:30 +00:00
committed by ob-robot
parent fdd13232dd
commit d2424c13db
8 changed files with 160 additions and 18 deletions
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25
src/sql/rewrite/ob_transform_groupby_pushdown.cpp
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@ -655,8 +655,11 @@ int ObTransformGroupByPushdown::do_groupby_push_down(ObSelectStmt *stmt,
int ret = OB_SUCCESS;
ObSqlBitSet<> outer_table_set;
trans_happend = false;
ObSQLSessionInfo *session_info = NULL;
bool enable_group_by_placement_transform = false;
if (OB_ISNULL(stmt) || OB_ISNULL(ctx_) ||
OB_ISNULL(ctx_->stmt_factory_) || OB_ISNULL(ctx_->expr_factory_)) {
OB_ISNULL(ctx_->stmt_factory_) || OB_ISNULL(ctx_->expr_factory_) ||
OB_ISNULL(session_info = ctx_->session_info_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("params are invalid", K(ret), K(ctx_), K(stmt));
} else if (OB_FAIL(ctx_->stmt_factory_->create_stmt(trans_stmt))) {
@ -717,10 +720,19 @@ int ObTransformGroupByPushdown::do_groupby_push_down(ObSelectStmt *stmt,
}
}
LOG_TRACE("push down params", K(ret));
bool hint_force_pushdown = false;
if (OB_FAIL(ret) || !is_valid) {
} else if (OB_FAIL(check_hint_valid(static_cast<ObDMLStmt &>(*stmt), params, is_valid))) {
} else if (OB_FAIL(session_info->is_groupby_placement_transformation_enabled(enable_group_by_placement_transform))) {
LOG_WARN("failed to check group by placement transform enabled", K(ret));
} else if (OB_FAIL(check_hint_valid(static_cast<ObDMLStmt &>(*stmt),
params,
hint_force_pushdown,
is_valid))) {
LOG_WARN("check hint failed", K(ret));
} else if (!is_valid) {
OPT_TRACE("hint disable group by pushdown");
} else if (!enable_group_by_placement_transform && !hint_force_pushdown) {
OPT_TRACE("system variable disable group by pushdown");
} else if (OB_FAIL(transform_groupby_push_down(trans_stmt,
flattern_joined_tables,
outer_table_set,
@ -1633,10 +1645,14 @@ int ObTransformGroupByPushdown::has_group_by_op(ObLogicalOperator *op, bool &bre
return ret;
}
int ObTransformGroupByPushdown::check_hint_valid(ObDMLStmt &stmt, ObIArray<PushDownParam> &params, bool &is_valid)
int ObTransformGroupByPushdown::check_hint_valid(ObDMLStmt &stmt,
ObIArray<PushDownParam> &params,
bool &hint_force_pushdown,
bool &is_valid)
{
int ret = OB_SUCCESS;
is_valid = false;
hint_force_pushdown = false;
const ObQueryHint *query_hint = NULL;
const ObGroupByPlacementHint *hint = static_cast<const ObGroupByPlacementHint*>(get_hint(stmt.get_stmt_hint()));
const ObHint *no_rewrite = stmt.get_stmt_hint().get_no_rewrite_hint();
@ -1657,6 +1673,9 @@ int ObTransformGroupByPushdown::check_hint_valid(ObDMLStmt &stmt, ObIArray<PushD
LOG_WARN("get unexpected null", K(ret), K(trans_tables));
} else {
is_valid = hint->enable_groupby_placement(query_hint->cs_type_, trans_tables.at(i));
if (is_valid) {
hint_force_pushdown = true;
}
LOG_TRACE("succeed hint valid", K(is_valid), K(*trans_tables.at(i).at(0)), K(*hint));
if (!is_valid) { break; }
}