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path: root/src/backend/optimizer/path/costsize.c
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-rw-r--r--src/backend/optimizer/path/costsize.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/backend/optimizer/path/costsize.c b/src/backend/optimizer/path/costsize.c
index 380336518fe..aab06c7d213 100644
--- a/src/backend/optimizer/path/costsize.c
+++ b/src/backend/optimizer/path/costsize.c
@@ -1858,7 +1858,7 @@ cost_incremental_sort(Path *path,
* Check if the expression contains Var with "varno 0" so that we
* don't call estimate_num_groups in that case.
*/
- if (bms_is_member(0, pull_varnos((Node *) member->em_expr)))
+ if (bms_is_member(0, pull_varnos(root, (Node *) member->em_expr)))
{
unknown_varno = true;
break;