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[CP] fix join elimination bug

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This commit is contained in:
obdev
2022-05-05 14:21:27 +08:00
committed by wangzelin.wzl
parent 7d150eca15
commit 336c46df13
3 changed files with 22 additions and 22 deletions
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26
src/sql/rewrite/ob_transform_join_elimination.cpp
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@ -2074,22 +2074,20 @@ int ObTransformJoinElimination::trans_column_expr(ObDMLStmt* stmt, ObRawExpr* ex
{
int ret = OB_SUCCESS;
new_expr = NULL;
bool is_nullable = false;
if (OB_ISNULL(stmt) || OB_ISNULL(expr) || OB_ISNULL(ctx_)) {
LOG_WARN("param has null", K(ret));
LOG_WARN("param has null", K(ret), K(stmt), K(expr), K(ctx_));
} else if (OB_FAIL(ObTransformUtils::check_expr_nullable(stmt, expr, is_nullable, ObTransformUtils::NULLABLE_SCOPE::NS_FROM))) {
LOG_WARN("failed to check whether expr is nullable", K(ret));
} else if (!is_nullable) {
if (OB_FAIL(ObRawExprUtils::build_const_bool_expr(ctx_->expr_factory_, new_expr, true))) {
LOG_WARN("build true expr failed", K(ret));
} else { /*do nothing*/
}
} else {
bool is_nullable = false;
if (OB_FAIL(ObTransformUtils::check_expr_nullable(stmt, expr, is_nullable))) {
LOG_WARN("failed to check whether expr is nullable", K(ret));
} else if (!is_nullable) {
if (OB_FAIL(ObRawExprUtils::build_const_bool_expr(ctx_->expr_factory_, new_expr, true))) {
LOG_WARN("build true expr failed", K(ret));
} else { /*do nothing*/
}
} else {
if (OB_FAIL(ObRawExprUtils::build_is_not_null_expr(*ctx_->expr_factory_, expr, new_expr))) {
LOG_WARN("build is not null expr failed", K(ret));
} else { /*do nothing*/
}
if (OB_FAIL(ObRawExprUtils::build_is_not_null_expr(*ctx_->expr_factory_, expr, new_expr))) {
LOG_WARN("build is not null expr failed", K(ret));
} else { /*do nothing*/
}
}
return ret;