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In-Reply-To: 
 <CANhcyEUGoaSpJKDJaQfrQR6+-4+_PgQ=0DmZZztPAEheMkMw7w@mail.gmail.com>
From: Peter Smith <smithpb2250@gmail.com>
Date: Thu, 21 May 2026 10:02:25 +1000
Message-ID: 
 <CAHut+PtE6TgoxYcKGB++TR_XRZmRUcHXq5VGyAOQfxhprkpapw@mail.gmail.com>
Subject: Re: Proposal: Conflict log history table for Logical Replication
To: Shlok Kyal <shlok.kyal.oss@gmail.com>
Cc: vignesh C <vignesh21@gmail.com>, Dilip Kumar <dilipbalaut@gmail.com>,
	Nisha Moond <nisha.moond412@gmail.com>,
 Amit Kapila <amit.kapila16@gmail.com>,
	shveta malik <shveta.malik@gmail.com>,
 Masahiko Sawada <sawada.mshk@gmail.com>,
	Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>,
	PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>,
 shveta malik <shvetamalik@gmail.com>
Content-Type: text/plain; charset="UTF-8"
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Archived-At: 
 <https://www.postgresql.org/message-id/CAHut%2BPtE6TgoxYcKGB%2B%2BTR_XRZmRUcHXq5VGyAOQfxhprkpapw%40mail.gmail.com>
Precedence: bulk

On Wed, May 20, 2026 at 8:50=E2=80=AFPM Shlok Kyal <shlok.kyal.oss@gmail.co=
m> wrote:
..
> Comments for 0002:
> 2. We can rename the schema pg_conflict to a different schema name.
> Is it ok to hardcode the schema name to 'pg_conflict'?
> -                errmsg("cannot move objects into or out of CONFLICT sche=
ma")));
> +                errmsg("cannot move objects into or out of
> pg_conflict schema")));
>
> Example:
> postgres=3D# ALTER SCHEMA pg_conflict RENAME TO sc1;
> ALTER SCHEMA
> postgres=3D# ALTER TABLE t2 SET SCHEMA sc1;
> ERROR:  cannot move objects into or out of pg_conflict schema
>

Yikes!

I am not sure that the error message is the problem here. There are
worse things that are similar to this. e.g. I found that you can do
the same trick of renaming the 'pg_catalog' schema, and it breaks
anything that refers to that schema by name -- all the internal SQL!!

test_pub=3D# ALTER SCHEMA pg_catalog RENAME TO mycatalog;
ALTER SCHEMA
test_pub=3D# \dRp+
ERROR:  relation "pg_catalog.pg_publication" does not exist
LINE 9: FROM pg_catalog.pg_publication
             ^

=3D=3D=3D=3D=3D=3D
Kind Regards,
Peter Smith.
Fujitsu Australia