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-rw-r--r--src/backend/access/nbtree/nbtsort.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/backend/access/nbtree/nbtsort.c b/src/backend/access/nbtree/nbtsort.c
index e6b72111363..efee86784bb 100644
--- a/src/backend/access/nbtree/nbtsort.c
+++ b/src/backend/access/nbtree/nbtsort.c
@@ -1192,7 +1192,7 @@ _bt_load(BTWriteState *wstate, BTSpool *btspool, BTSpool *btspool2)
int64 tuples_done = 0;
bool deduplicate;
- deduplicate = wstate->inskey->allequalimage &&
+ deduplicate = wstate->inskey->allequalimage && !btspool->isunique &&
BTGetDeduplicateItems(wstate->index);
if (merge)