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[FEAT MERGE] 4.3 optimizer enhancement

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Co-authored-by: 2149 <260391947@qq.com>
Co-authored-by: akaError <lzg020616@163.com>
Co-authored-by: jinmaoli <lijinmao.csmaster@gmail.com>
This commit is contained in:
yinyj17
2023-12-16 14:12:43 +00:00
committed by ant-ob-hengtang
parent 438a70b2b8
commit 37fe7ce4eb
50 changed files with 3205 additions and 1059 deletions
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9
src/sql/optimizer/ob_log_plan.cpp
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@ -8304,6 +8304,7 @@ int ObLogPlan::allocate_sort_and_exchange_as_top(ObLogicalOperator *&top,
const OrderItem *hash_sortkey)
{
int ret = OB_SUCCESS;
bool is_part_topn = (NULL != hash_sortkey) && (NULL != topn_expr);
if (OB_ISNULL(top)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret));
@ -8313,7 +8314,7 @@ int ObLogPlan::allocate_sort_and_exchange_as_top(ObLogicalOperator *&top,
} else { /*do nothing*/ }
} else {
// allocate push down limit if necessary
if (NULL != topn_expr && !need_sort) {
if (NULL != topn_expr && !need_sort && !is_part_topn) {
bool is_pushed = false;
if (!is_fetch_with_ties &&
OB_FAIL(try_push_limit_into_table_scan(top, topn_expr, topn_expr, NULL, is_pushed))) {
@ -8392,15 +8393,15 @@ int ObLogPlan::allocate_sort_and_exchange_as_top(ObLogicalOperator *&top,
sort_keys,
real_prefix_pos,
real_local_order,
NULL,
false,
topn_expr,
is_fetch_with_ties,
hash_sortkey))) {
LOG_WARN("failed to allocate sort as top", K(ret));
} else { /*do nothing*/ }
}
// allocate final limit if necessary
if (OB_SUCC(ret) && NULL != topn_expr && exch_info.is_pq_local()) {
if (OB_SUCC(ret) && NULL != topn_expr && exch_info.is_pq_local() && !is_part_topn) {
if (OB_FAIL(allocate_limit_as_top(top,
topn_expr,
NULL,