Message-ID: <7145b4b2bfa22b9ae7cb4c602defa050065a33cc.camel@j-davis.com>
Subject: Re: Statistics Import and Export
From: Jeff Davis <pgsql@j-davis.com>
To: Nathan Bossart <nathandbossart@gmail.com>
Cc: Hari Krishna Sunder <hari.db.pg@gmail.com>, Corey Huinker
 <corey.huinker@gmail.com>, Robert Treat <rob@xzilla.net>, Robert Haas
 <robertmhaas@gmail.com>, Andres Freund <andres@anarazel.de>, Tom Lane
 <tgl@sss.pgh.pa.us>, Michael Paquier <michael@paquier.xyz>, jian he
 <jian.universality@gmail.com>, Bruce Momjian <bruce@momjian.us>, Matthias
 van de Meent <boekewurm+postgres@gmail.com>, Magnus Hagander
 <magnus@hagander.net>, Stephen Frost <sfrost@snowman.net>, Ashutosh Bapat
 <ashutosh.bapat.oss@gmail.com>, Peter Smith <smithpb2250@gmail.com>,
 PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>,
 alvherre@alvh.no-ip.org
Date: Wed, 21 May 2025 16:53:17 -0700
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On Wed, 2025-05-21 at 16:29 -0500, Nathan Bossart wrote:
> I don't know precisely where that line might be, but in this case,
> the
> dumped stats have no hope of restoring into anything older than
> v18... But I see no particular benefit from moving the complexity
> to the
> import side here.

That's fine with me. Perhaps we should just say that pre-18 behavior
differences can be fixed up during export, and post-18 behavior
differences are fixed up during import?

Regards,
	Jeff Davis