From: PG Bug reporting form <noreply@postgresql.org>
To: pgsql-bugs@lists.postgresql.org
Cc: exclusion@gmail.com
Subject: BUG #18634: Wrong varnullingrels with merge ... when not matched by source
Date: Thu, 26 Sep 2024 18:00:01 +0000
Message-ID: <18634-db5299c937877f2b@postgresql.org> (raw)
The following bug has been logged on the website:
Bug reference: 18634
Logged by: Alexander Lakhin
Email address: exclusion@gmail.com
PostgreSQL version: 17.0
Operating system: Ubuntu 22.04
Description:
The following script:
CREATE TABLE t (a int);
INSERT INTO t VALUES(1), (2);
CREATE VIEW v AS SELECT a FROM t WHERE EXISTS (SELECT 1 FROM t);
MERGE INTO v USING (SELECT * FROM generate_series(1,1)) AS s(a)
ON s.a = v.a WHEN NOT MATCHED BY SOURCE THEN DELETE;
produces:
ERROR: XX000: wrong varnullingrels (b) (expected (b 4)) for Var 5/1
LOCATION: search_indexed_tlist_for_var, setrefs.c:2847
At the same time,
MERGE INTO v USING (SELECT * FROM generate_series(1,1)) AS s(a)
ON s.a = v.a WHEN MATCHED THEN DELETE;
planned and executed with no error.
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Subject: Re: BUG #18634: Wrong varnullingrels with merge ... when not matched by source
In-Reply-To: <18634-db5299c937877f2b@postgresql.org>
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