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-rw-r--r--src/backend/optimizer/prep/prepunion.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c
index 9c6c47a1b9b..6d8f8938b2f 100644
--- a/src/backend/optimizer/prep/prepunion.c
+++ b/src/backend/optimizer/prep/prepunion.c
@@ -2067,6 +2067,8 @@ adjust_appendrel_attrs_mutator(Node *node,
newinfo->scansel_cache = NIL;
newinfo->left_bucketsize = -1;
newinfo->right_bucketsize = -1;
+ newinfo->left_mcvfreq = -1;
+ newinfo->right_mcvfreq = -1;
return (Node *) newinfo;
}