Re: Validate SERVER subscription conninfo during ALTER SUBSCRIPTION ... OWNER TO

From: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
To: "Hayato Kuroda (Fujitsu)" <kuroda(dot)hayato(at)fujitsu(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Validate SERVER subscription conninfo during ALTER SUBSCRIPTION ... OWNER TO
Date: 2026-07-22 00:40:10
Message-ID: CAHGQGwHMg1j+1+t7hNi7YnCAMFnaw7MH1TjGodCQj8pZcen2Yw@mail.gmail.com
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On Tue, Jul 21, 2026 at 6:45 PM Hayato Kuroda (Fujitsu)
<kuroda(dot)hayato(at)fujitsu(dot)com> wrote:
> Not sure, but can we also meet the similar situation via ALTER USER MAPPING
> ... (DROP password) command? I.e., the command would succeed but the worker
> will fail.
> If so, should we also fix the case? Or it's something like "Don't do that" situation?

Yes, a similar situation can probably be created also by changing
the underlying user mapping.

But, I think that's part of a broader dependency invalidation problem.
Similar issues could also arise from commands such as DROP USER MAPPING,
ALTER SERVER, and ALTER FOREIGN DATA WRAPPER ... CONNECTION/NO CONNECTION.

If we decide to address the ALTER USER MAPPING case, we should probably
consider those related cases as well. Since that's a broader topic, I think
it's better to discuss that separately.

Regards,

--
Fujii Masao

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