Workaround for single connect-by cases

Offering: openGaussDev More detail: If no rownum or level qual is present, do not create connect-by-level filter. Signed-off-by:peijisheng peijisheng@huawei.com Match-id-400310ecf9513b47303f71f69da642d4b44d762b
2022-03-04 12:56:56 +08:00
parent fd2bf6d4a6
commit b93d4de9ed
3 changed files with 32 additions and 24 deletions
--- a/src/gausskernel/runtime/executor/nodeStartWithOp.cpp
+++ b/src/gausskernel/runtime/executor/nodeStartWithOp.cpp
@ -383,7 +383,7 @@ bool CheckCycleExeception(StartWithOpState *node, TupleTableSlot *slot)

    Assert (IsA(rustate, RecursiveUnionState));

-    if (IsConnectByLevelStartWithPlan(swplan)) {
+    if (IsConnectByLevelStartWithPlan(swplan) || node->sw_keyAttnum == 0) {
        /* for connect by level case, we do not do cycle check */
        return false;
    }