| From: | Robert Treat <rob(at)xzilla(dot)net> |
|---|---|
| To: | Nathan Bossart <nathandbossart(at)gmail(dot)com> |
| Cc: | Corey Huinker <corey(dot)huinker(at)gmail(dot)com>, Jeff Davis <pgsql(at)j-davis(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Michael Paquier <michael(at)paquier(dot)xyz>, jian he <jian(dot)universality(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, Stephen Frost <sfrost(at)snowman(dot)net>, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, Peter Smith <smithpb2250(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, alvherre(at)alvh(dot)no-ip(dot)org |
| Subject: | Re: Statistics Import and Export |
| Date: | 2025-04-01 03:02:49 |
| Message-ID: | CAJSLCQ3+k4_KRinU4+FGecYdW27EYvP75xQgrSpCPg2Tt+0OMw@mail.gmail.com |
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On Mon, Mar 31, 2025 at 10:33 PM Nathan Bossart
<nathandbossart(at)gmail(dot)com> wrote:
> On Mon, Mar 31, 2025 at 11:11:47AM -0400, Corey Huinker wrote:
> Regarding whether pg_dump should dump statistics by default, my current
> thinking is that it shouldn't, but I think we _should_ have pg_upgrade
> dump/restore statistics by default because that is arguably the most
> important use-case. This is more a gut feeling than anything, so I reserve
> the right to change my opinion.
>
I did some mental exercises on a number of different use cases and
scenarios (pagila work, pgextractor type stuff, backups, etc...) and I
couldn't come up with any strong arguments against including the stats
by default, generally because I think when your process needs to care
about the output of pg_dump, it seems like most cases require enough
specificity that this wouldn't actually break that.
Still, I am sympathetic to Greg's earlier concerns on the topic, but
would also agree it seems like a clear win for pg_upgrade, so I think
our gut feelings might actually be aligned on this one ;-)
Robert Treat
https://xzilla.net
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