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-rw-r--r--src/backend/access/nbtree/nbtutils.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/src/backend/access/nbtree/nbtutils.c b/src/backend/access/nbtree/nbtutils.c
index 8b025796127..c899168c995 100644
--- a/src/backend/access/nbtree/nbtutils.c
+++ b/src/backend/access/nbtree/nbtutils.c
@@ -2920,6 +2920,17 @@ _bt_check_compare(IndexScanDesc scan, ScanDirection dir,
if (isNull)
{
+ /*
+ * Scalar scan key isn't satisfied by NULL tuple value.
+ *
+ * If we're treating scan keys as nonrequired, and key is for a
+ * skip array, then we must attempt to advance the array to NULL
+ * (if we're successful then the tuple might match the qual).
+ */
+ if (unlikely(forcenonrequired && key->sk_flags & SK_BT_SKIP))
+ return _bt_advance_array_keys(scan, NULL, tuple, tupnatts,
+ tupdesc, *ikey, false);
+
if (key->sk_flags & SK_BT_NULLS_FIRST)
{
/*
@@ -2958,7 +2969,7 @@ _bt_check_compare(IndexScanDesc scan, ScanDirection dir,
}
/*
- * In any case, this indextuple doesn't match the qual.
+ * This indextuple doesn't match the qual.
*/
return false;
}