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-rw-r--r--src/backend/executor/nodeMergeAppend.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/backend/executor/nodeMergeAppend.c b/src/backend/executor/nodeMergeAppend.c
index 4ebe0cbe033..43059664b93 100644
--- a/src/backend/executor/nodeMergeAppend.c
+++ b/src/backend/executor/nodeMergeAppend.c
@@ -327,8 +327,9 @@ heap_compare_slots(MergeAppendState *node, SlotNumber slot1, SlotNumber slot2)
}
else
{
- compare = DatumGetInt32(FunctionCall2(&scankey->sk_func,
- datum1, datum2));
+ compare = DatumGetInt32(FunctionCall2Coll(&scankey->sk_func,
+ scankey->sk_collation,
+ datum1, datum2));
if (compare != 0)
{
if (scankey->sk_flags & SK_BT_DESC)