public inbox for [email protected]  

help / color / mirror / Atom feed

From: Laurenz Albe <[email protected]>
To: Bruce Momjian <[email protected]>
To: Nikolay Samokhvalov <[email protected]>
Cc: [email protected]
Subject: Re: [PATCH] Doc: clarify that pg_upgrade statistics transfer works cross-version
Date: Tue, 24 Mar 2026 17:53:27 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <CAM527d_Qt9ZGt99vgTaidfObRiDH0R5F_uEfum9zHeZbc+LwCQ@mail.gmail.com>
	<[email protected]>
	<CAM527d89GmcMV5GD2PXS-a3ay3YE-HVSwV4NT0_o2ySf_5v8Kw@mail.gmail.com>
	<[email protected]>

On Tue, 2026-03-24 at 11:04 -0400, Bruce Momjian wrote:
> On Tue, Mar 24, 2026 at 05:36:42AM -0700, Nikolay Samokhvalov wrote:
> > On Mon, Mar 23, 2026 at 23:59 Laurenz Albe <[email protected]> wrote:
> > How about adding a simple remark, like
> > 
> > --- a/doc/src/sgml/ref/pgupgrade.sgml
> > +++ b/doc/src/sgml/ref/pgupgrade.sgml
> > +     Transferring optimizer statistics works regardless of the old cluster's
> > +     major version.
> > 
> > That would work too -- my goal was just to resolve confusion.
> 
> I was under the same impression --- that it only worked with upgrades
> _from_ PG 18 and later.  However, I can't find any documentation on this
> limitation, so why did so many think this was true?  I don't think
> adding anything to the docs is the right approach.

Bruce, you are confusing me.  Your first sentence suggests that you
(erroneously) thought that upgrading statistics only works when upgrading
*from* v18 or better.  But your last sentence suggests that you'd rather
not add anything to the documentation that could dispel that misconception.

Why?

Yours,
Laurenz Albe

view thread (10+ messages)  latest in thread

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: [email protected]
  Cc: [email protected], [email protected], [email protected], [email protected]
  Subject: Re: [PATCH] Doc: clarify that pg_upgrade statistics transfer works cross-version
  In-Reply-To: <[email protected]>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox