hcq/oceanbase
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Fix view merge bug when there is a rand() function in select items of view.

Browse Source
This commit is contained in:
my0
2021-09-17 10:24:34 +08:00
committed by wangzelin.wzl
parent 9e46649a49
commit a87cb43159
2 changed files with 15 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/sql/rewrite/ob_transform_groupby_placement.cpp
View File

@ -1548,6 +1548,7 @@ int ObTransformGroupByPlacement::check_groupby_pullup_validity(ObDMLStmt* stmt,
{
int ret = OB_SUCCESS;
bool can_pullup = false;
bool has_rand = false;
if (OB_ISNULL(stmt) || OB_ISNULL(table)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param has null", K(stmt), K(table), K(ret));
@ -1574,6 +1575,11 @@ int ObTransformGroupByPlacement::check_groupby_pullup_validity(ObDMLStmt* stmt,
LOG_WARN("failed to check null propagate select expr", K(ret));
} else if (!can_pullup) {
// do nothing
} else if (OB_FAIL(sub_stmt->has_rand(has_rand))) {
LOG_WARN("failed to check stmt has rand func", K(ret));
// stmt不能包含rand函数 https://work.aone.alibaba-inc.com/issue/35875561
} else if (!(can_pullup = !has_rand)) {
// do nothing
} else if (OB_FALSE_IT(helper.need_merge_ = sub_stmt->get_stmt_hint().enable_view_merge())) {
} else if (OB_FAIL(valid_views.push_back(helper))) {
LOG_WARN("failed to push back group stmt index", K(ret));

10
src/sql/rewrite/ob_transform_view_merge.cpp
View File

@ -346,7 +346,15 @@ int ObTransformViewMerge::check_can_be_unnested(
LOG_WARN("NULL expr", K(ret));
} else if (expr->has_flag(CNT_SUB_QUERY)) {
can_be = false;
} else { /*do nothing*/
}
}
// stmt不能包含rand函数 https://work.aone.alibaba-inc.com/issue/35875561
if (OB_SUCC(ret) && can_be) {
bool has_rand = false;
if (OB_FAIL(child_stmt->has_rand(has_rand))) {
LOG_WARN("failed to get rand flag", K(ret));
} else {
can_be = !has_rand;
}
}
}