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Fix a dblink bug

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This commit is contained in:
xianyu-w
2023-02-09 16:41:40 +00:00
committed by ob-robot
parent ddca0b032d
commit 229da88e8f
2 changed files with 25 additions and 3 deletions
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9
src/sql/rewrite/ob_transform_min_max.cpp
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@ -82,6 +82,7 @@ int ObTransformMinMax::check_transform_validity(ObSelectStmt *select_stmt,
int ret = OB_SUCCESS;
const ObRawExpr *select_expr = NULL;
is_valid = false;
bool invalid_for_dblink = false;
if (OB_ISNULL(select_stmt)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected null", K(ret), K(select_stmt));
@ -95,7 +96,13 @@ int ObTransformMinMax::check_transform_validity(ObSelectStmt *select_stmt,
|| select_stmt->get_aggr_item_size() != 1) {
//do nothing
OPT_TRACE("not a simple query");
} else if (OB_FAIL(is_valid_select_list(*select_stmt, select_expr, is_valid))) {
} else if (OB_FAIL(ObTransformUtils::check_stmt_from_one_dblink(select_stmt, invalid_for_dblink))) {
LOG_WARN("failed to check if all tables from one dblink", K(ret));
} else if (invalid_for_dblink) {
is_valid = false;
// do not transform,
// for compatibility with Oracle before 12c
} else if (OB_FAIL(is_valid_select_list(*select_stmt, select_expr, is_valid))) {
LOG_WARN("failed to check is valid select list", K(ret));
} else if (!is_valid) {
//do nothing