From: Tom Lane <tgl@sss.pgh.pa.us>
To: Scott Ribe <scott_ribe@elevated-dev.com>
Cc: Pgsql-admin <pgsql-admin@lists.postgresql.org>
Subject: Re: regression in PG 15.1
Date: Mon, 28 Nov 2022 10:15:50 -0500
Message-ID: <554068.1669648550@sss.pgh.pa.us> (raw)
In-Reply-To: <4B29C00C-028D-43AE-98F8-793BFC461CA5@elevated-dev.com>
References: <D86D21A2-20CB-4E28-AF0A-8C2C0139DA97@elevated-dev.com>
<543106.1669646690@sss.pgh.pa.us>
<4B29C00C-028D-43AE-98F8-793BFC461CA5@elevated-dev.com>
Scott Ribe <scott_ribe@elevated-dev.com> writes:
>> On Nov 28, 2022, at 7:44 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> Why do you say this is a regression? From what I know of the partition
>> pruning logic (admittedly not a whole lot), I don't think we'd have
>> ever pruned on the basis of such a constraint.
> Because performance of the query tanked.
Compared to what? If you said something like "it worked as I expected
in Postgres x.y", that would be something to go on.
regards, tom lane
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To: pgsql-admin@postgresql.org
Cc: tgl@sss.pgh.pa.us, scott_ribe@elevated-dev.com, pgsql-admin@lists.postgresql.org
Subject: Re: regression in PG 15.1
In-Reply-To: <554068.1669648550@sss.pgh.pa.us>
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