From: PG Bug reporting form <noreply@postgresql.org>
To: pgsql-bugs@lists.postgresql.org
Cc: linyuzhe.lyz@gmail.com
Subject: BUG #18763: pg_get_viewdef returns an old def with new relation name
Date: Thu, 02 Jan 2025 06:43:57 +0000
Message-ID: <18763-92ec491c50111041@postgresql.org> (raw)
The following bug has been logged on the website:
Bug reference: 18763
Logged by: lyz
Email address: linyuzhe.lyz@gmail.com
PostgreSQL version: 13.7
Operating system: Linux
Description:
in first connection
test5=# create table a1(c int);
CREATE TABLE
test5=# create table a2(c int);
CREATE TABLE
test5=# create view v as select * from a1;
CREATE VIEW
then rename relation names and replace view in one txn, but not commit.
test5=# begin;
BEGIN
test5=*# alter table a1 rename to a3;
ALTER TABLE
test5=*# alter table a2 rename to a1;
ALTER TABLE
test5=*# create or replace view v as select * from a1;
CREATE VIEW
in second connection:
test5=# select pg_get_viewdef('v');
it will be stuck by AccessShareLock of 'v'.
Then we commit txn in first connection,
the result of second connection wii be:
pg_get_viewdef
----------------
SELECT a3.c +
FROM a3;
(1 row)
old definition but using new relation name.
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To: pgsql-bugs@postgresql.org
Cc: noreply@postgresql.org, pgsql-bugs@lists.postgresql.org, linyuzhe.lyz@gmail.com
Subject: Re: BUG #18763: pg_get_viewdef returns an old def with new relation name
In-Reply-To: <18763-92ec491c50111041@postgresql.org>
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