Re: [PATCH] Doc: clarify that pg_upgrade statistics transfer works cross-version

On Tue, Mar 24, 2026 at 05:53:27PM +0100, Laurenz Albe wrote:
> 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 <laurenz(dot)albe(at)cybertec(dot)at> wrote:
> > > How about adding a simple remark, like
> > 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

Right.

> *from* v18 or better. But your last sentence suggests that you'd rather
> not add anything to the documentation that could dispel that misconception.

So, we don't normally document cases where a limitation does not exist.
I think the logical place to document this is in the PG 18 release
notes. I am still confused why people, like myself, got this wrong.
What is the source of the confusion? Just unclear release notes?

--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com

Do not let urgent matters crowd out time for investment in the future.