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fix subquery coalesce cause update 4016

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This commit is contained in:
ChangerR
2023-05-11 08:41:57 +00:00
committed by ob-robot
parent 857ed98699
commit 635cd39eda
4 changed files with 58 additions and 27 deletions
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9
src/sql/rewrite/ob_transform_query_push_down.cpp
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@ -161,6 +161,7 @@ int ObTransformQueryPushDown::need_transform(const common::ObIArray<ObParentDMLS
LOG_WARN("unexpected null", K(ret), K(ctx_), K(query_hint));
} else if (stmt.get_table_size() == 1) {
const TableItem *table = NULL;
const ObViewMergeHint *myhint = NULL;
if (OB_ISNULL(table = stmt.get_table_item(0))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("table item is null", K(ret));
@ -175,8 +176,12 @@ int ObTransformQueryPushDown::need_transform(const common::ObIArray<ObParentDMLS
} else if (!need_trans) {
OPT_TRACE("hint reject transform");
}
} else if (query_hint->is_valid_outline_transform(ctx_->trans_list_loc_,
get_hint(table->ref_query_->get_stmt_hint()))) {
} else if (OB_FALSE_IT(myhint =
static_cast<const ObViewMergeHint*>(get_hint(table->ref_query_->get_stmt_hint())))) {
// do nothing
} else if (myhint != NULL &&
query_hint->is_valid_outline_transform(ctx_->trans_list_loc_, myhint) &&
myhint->enable_query_push_down(ctx_->src_qb_name_)) {
need_trans = true;
} else {
OPT_TRACE("outline reject transform");