Re: Support EXCEPT for TABLES IN SCHEMA publications

From: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
To: Peter Smith <smithpb2250(at)gmail(dot)com>
Cc: Nisha Moond <nisha(dot)moond412(at)gmail(dot)com>, Zsolt Parragi <zsolt(dot)parragi(at)percona(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: Support EXCEPT for TABLES IN SCHEMA publications
Date: 2026-06-16 11:08:03
Message-ID: CAA4eK1JDcANGYEkMpecE5us1tpTF01cyLOT2uLrO4e-CzESPbw@mail.gmail.com
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On Tue, Jun 16, 2026 at 12:06 PM Peter Smith <smithpb2250(at)gmail(dot)com> wrote:
>
> On Tue, Jun 16, 2026 at 2:36 PM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
> >
> > No, I don't think this is a bug for PG19 and the new behaviour for
> > PG20 is intentional and required because in this case, the EXCEPT
> > clause is schema-scoped, so once schema is changed, the table should
> > be removed from the exclusion list. OTOH, in PG19, the exclusion list
> > follows the table-level exclusion based on its OID as we can see in
> > the example provided by you. I think we can consider adding a line for
> > this in docs if you and others feel that such explicit mention can
> > avoid ambiguity around this. How about something like the following as
> > a separate para in EXCEPT clause description: Once a table is
> > excluded, the exclusion applies to that table itself, regardless of
> > its name or schema. Renaming the table or moving it to another schema
> > with <command>ALTER TABLE ... SET SCHEMA</command> does not cancel the
> > exclusion."
> >
>
> OK. The explanatory text LGTM.
>
> What's the next step? Should I create a new thread/patch to deal with this?
>

WFM.

--
With Regards,
Amit Kapila.

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