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[CP] Disable outer join elimination with rand or state function

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This commit is contained in:
AA-tuliwei-BB
2024-07-25 07:52:31 +00:00
committed by ob-robot
parent 9f605c632f
commit 5d876364ba
1 changed files with 10 additions and 0 deletions
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10
src/sql/rewrite/ob_transform_join_elimination.cpp
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@ -1276,6 +1276,8 @@ int ObTransformJoinElimination::check_vaild_non_sens_dul_vals(ObIArray<ObParentD
ObSelectStmt *select_stmt = static_cast<ObSelectStmt*>(stmt);
ObDMLStmt *parent_stmt = NULL;
bool has_rownum_expr = false;
bool has_state_func = false;
bool has_rand = false;
if (select_stmt->has_group_by() ||
select_stmt->is_set_stmt() ||
select_stmt->has_rollup() ||
@ -1288,6 +1290,14 @@ int ObTransformJoinElimination::check_vaild_non_sens_dul_vals(ObIArray<ObParentD
LOG_WARN("failed to check has rownum", K(ret));
} else if (has_rownum_expr) {
is_valid = false;
} else if (OB_FAIL(select_stmt->has_rand(has_rand))) {
LOG_WARN("failed to check has rand", K(ret));
} else if (has_rand) {
is_valid = false;
} else if (OB_FAIL(select_stmt->has_special_expr(CNT_STATE_FUNC, has_state_func))) {
LOG_WARN("failed to check has state func", K(ret));
} else if (has_state_func) {
is_valid = false;
} else if (select_stmt->is_distinct()) {
is_valid = true;
}