Re: pgsql: libpq: Grease the protocol by default

Jacob Champion <jacob(dot)champion(at)enterprisedb(dot)com> writes:
> On Mon, Feb 23, 2026 at 2:18 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> Either that or we decide that it's time to throw 9.2 support
>> overboard (looks like 9.3 and up are fine).

> Well, while I was hacking on a patch I realized that 9.3 (all the way
> up to 10) is only okay if you're running a sufficiently patched
> version. PG11 is the first to support negotiation for the whole
> release line.

Hmm ... and of course the whole point of this exercise is to be sure
we can pg_upgrade from those out-of-support versions.

> I think Jelte said it well back on the -committers thread:
>> Why only force max_protocol_version=3.0 for beta? It sounds like
>> this would also be an issue once we eventually bump the default
>> version.

> So a fix belongs in pg_upgrade, IMO, instead of the test. I have a
> draft passing locally that I should be able to share soon.

Fair enough.

regards, tom lane