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-rw-r--r--src/backend/optimizer/prep/prepunion.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c
index 6475633ae7..8ee6cf7f0e 100644
--- a/src/backend/optimizer/prep/prepunion.c
+++ b/src/backend/optimizer/prep/prepunion.c
@@ -987,7 +987,7 @@ generate_setop_tlist(List *colTypes, List *colCollations,
expr = (Node *) makeConst(INT4OID,
-1,
InvalidOid,
- sizeof(int4),
+ sizeof(int32),
Int32GetDatum(flag),
false,
true);