Re: BUG #18000: Access method used by matview can be dropped leaving broken matview

From: Michael Paquier <michael(at)paquier(dot)xyz>
To: Andres Freund <andres(at)anarazel(dot)de>
Cc: exclusion(at)gmail(dot)com, pgsql-bugs(at)lists(dot)postgresql(dot)org
Subject: Re: BUG #18000: Access method used by matview can be dropped leaving broken matview
Date: 2023-06-28 22:57:40
Message-ID: ZJy65NH4MuOuuaBW@paquier.xyz
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On Wed, Jun 28, 2023 at 08:11:51AM +0900, Michael Paquier wrote:
> Agreed. I was wondering if this was worth having in this path (other
> code paths are rather lax about that), but yes let's do it as there
> should not be more than one record in pg_depend.

There was something that was itching me a little bit here: shouldn't
we also switch the AM dependency of the second relation? In the
context of a table rewrite, the new relation is temporary and quickly
dropped after the relation files are swapped, but that may not be the
case of all the callers of swap_relation_files() depending on the
persistency of what they swap and what they want to do.

Thoughts?
--
Michael

Attachment Content-Type Size
v3-0001-Fix-pg_depend-entry-to-AMs-after-ALTER-TABLE-.-SE.patch text/x-diff 9.3 KB

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