Re: pg_restore error with partitioned table having exclude constraint

On 2025-Apr-24, Japin Li wrote:

> On Thu, 17 Apr 2025 at 17:18, Álvaro Herrera <alvherre(at)kurilemu(dot)de> wrote:
> > On 2025-Apr-17, Japin Li wrote:
> >
> >> It seems PG 16 does not support exclusion constraints on
> >> partitioned tables.
> >
> > Yeah, my recollection is that they were purposefully disallowed
> > (mainly because I didn't want to research how to fully make them
> > work when adding local partitioned indexes), and that we needed to
> > do more work if we wanted to let them through. I suspect commit
> > 8c852ba9a4 was mistaken to allow that case without looking for
> > further implications.
>
> Sorry, I’m unclear on “more work.” Can you explain further?

Well, there are no tests in the patch. 8c852ba9a434 added some, but
it's now clear that something was overlooked. I think this patch should
make more of an effort to cover all interesting cases in regression
tests if there are holes in coverage; and also add something to verify
that pg_dump and pg_upgrade work correctly for these constraints.

--
Álvaro Herrera PostgreSQL Developer — https://www.EnterpriseDB.com/
"Si quieres ser creativo, aprende el arte de perder el tiempo"