1 files changed, 10 insertions, 0 deletions
diff --git a/src/test/regress/input/constraints.source b/src/test/regress/input/constraints.source
index 7647544f9b..dbab8f159b 100644
--- a/src/test/regress/input/constraints.source
+++ b/src/test/regress/input/constraints.source
@@ -467,6 +467,7 @@ DROP TABLE circles;
 
 CREATE TABLE deferred_excl (
   f1 int,
+  f2 int,
   CONSTRAINT deferred_excl_con EXCLUDE (f1 WITH =) INITIALLY DEFERRED
 );
 
@@ -482,6 +483,15 @@ INSERT INTO deferred_excl VALUES(3);
 INSERT INTO deferred_excl VALUES(3); -- no fail here
 COMMIT; -- should fail here
 
+-- bug #13148: deferred constraint versus HOT update
+BEGIN;
+INSERT INTO deferred_excl VALUES(2, 1); -- no fail here
+DELETE FROM deferred_excl WHERE f1 = 2 AND f2 IS NULL; -- remove old row
+UPDATE deferred_excl SET f2 = 2 WHERE f1 = 2;
+COMMIT; -- should not fail
+
+SELECT * FROM deferred_excl;
+
 ALTER TABLE deferred_excl DROP CONSTRAINT deferred_excl_con;
 
 -- This should fail, but worth testing because of HOT updates