Re: v16 regression - wrong query results with LEFT JOINs + join removal

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: v16 regression - wrong query results with LEFT JOINs + join removal
Date: 2023-05-11 18:19:34
Message-ID: CA+TgmoYqkaQxn6D-R9XEduZr+7S32w9e8JJnOeo93HD_NA1FOA@mail.gmail.com
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On Thu, May 11, 2023 at 1:46 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> > What I'm inclined to do about it is just revert this particular
> > change. But I'd better run around and see where else I did that,
> > because the idea is evidently not ready for prime time.
>
> Looks like that was the only such change in 2489d76c4 or
> follow-ons, so done, with a test case based on your example.

Thanks, Tom!

--
Robert Haas
EDB: http://www.enterprisedb.com

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