Re: [PG19] eager aggregation gives wrong results because of bpchar_ops

From: Peter Geoghegan <pg(at)bowt(dot)ie>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: shihao zhong <zhong950419(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Guofenglinux <guofenglinux(at)gmail(dot)com>, Noah Misch <noah(at)leadboat(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>
Subject: Re: [PG19] eager aggregation gives wrong results because of bpchar_ops
Date: 2026-10-07 00:43:59
Message-ID: CAH2-Wz=-hrbj8WGDW=a38FRX14pGT75pb_7MSS2hSF_6HvTZ-w@mail.gmail.com
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On Tue, Oct 6, 2026 at 8:41 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> If you like, but my experience is that getting this right is pretty
> painful if you don't have a cross-version-upgrade-testing BF animal
> to experiment on. I do ...

Something like the attached seems like it'd do the job.

But, yeah, realistically, the hard part is proper testing and
validation, which I lack the ability to do myself.

--
Peter Geoghegan

Attachment Content-Type Size
0001-Fix-XversionUpgrade-allequalimage-failures.patch application/x-patch 1.4 KB

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