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Diffstat (limited to 'src/backend/executor/nodeWindowAgg.c')
-rw-r--r--src/backend/executor/nodeWindowAgg.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/backend/executor/nodeWindowAgg.c b/src/backend/executor/nodeWindowAgg.c
index a0470d3eab2..8657e2d39fe 100644
--- a/src/backend/executor/nodeWindowAgg.c
+++ b/src/backend/executor/nodeWindowAgg.c
@@ -344,13 +344,13 @@ advance_windowaggregate(WindowAggState *winstate,
winstate->curaggcontext = NULL;
/*
- * Moving-aggregate transition functions must not return NULL, see
+ * Moving-aggregate transition functions must not return null, see
* advance_windowaggregate_base().
*/
if (fcinfo->isnull && OidIsValid(peraggstate->invtransfn_oid))
ereport(ERROR,
(errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
- errmsg("moving-aggregate transition function must not return NULL")));
+ errmsg("moving-aggregate transition function must not return null")));
/*
* We must track the number of rows included in transValue, since to