Re: Skipping schema changes in publication

Dilip Kumar <dilipbalaut@gmail.com>

From: Dilip Kumar <dilipbalaut@gmail.com>
To: shveta malik <shveta.malik@gmail.com>
Cc: Amit Kapila <amit.kapila16@gmail.com>, Shlok Kyal <shlok.kyal.oss@gmail.com>, Ashutosh Sharma <ashu.coek88@gmail.com>, vignesh C <vignesh21@gmail.com>, "David G. Johnston" <david.g.johnston@gmail.com>, Peter Smith <smithpb2250@gmail.com>, "Zhijie Hou (Fujitsu)" <houzj.fnst@fujitsu.com>, YeXiu <1518981153@qq.com>, Ian Lawrence Barwick <barwick@gmail.com>, Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2026-02-26T04:14:47Z
Lists: pgsql-hackers
On Wed, Feb 25, 2026 at 4:01 PM shveta malik <shveta.malik@gmail.com> wrote:
>
> On Mon, Feb 23, 2026 at 4:46 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
> >
> > On Mon, Feb 23, 2026 at 11:37 AM Shlok Kyal <shlok.kyal.oss@gmail.com> wrote:
> > >
> > > I have also modified the error message as suggested by Shveta in [2].
> > > Attached the latest v48 patch.
> > >
> >
> > I see that the second patch (0002) brings complexity in the patch to
> > deal with following points: (a) The first complexity is if one of the
> > partitions is specified then how to compute the initial set of
> > relations to copy when pubviaroot is true. This is complex because we
> > need to exclude the partitions specified. (b) The other complexity is
> > combining Except list containing partitions and other publications
> > specifying partitions or partitioned tables both during replication
> > and probably during initial sync.
> >
> > I think it will be better if for the first version, we allow only root
> > partitioned table to be specified in the Except Table list. This would
> > mean that if the user tries to attach that root partition table to
> > another root then we should give an error. If we go via this route, it
> > will be important to allow users to remove some tables from the Except
> > list, so we can provide Alter Publication <pub_name> Set Except Table
> > (table_names).
> >
> > I think excluding specific partitions may also have some use cases but
> > adding additional complexity and maintenance effort is worth, if there
> > is a real field demand for such a feature.
> >
> > Thoughts?
> >
>
> I fully agree. The additional complexity does not appear to be worth
> the value right now, unless we receive meaningful user feedback that
> justifies implementing it.
>

I’m on the same page. The benefit probably doesn't justify the added
complexity and the long-term code maintenance overhead this would
introduce.

-- 
Regards,
Dilip Kumar
Google



Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →
  1. Fix miscellaneous issues in EXCEPT publication clause.

  2. Change syntax of EXCEPT TABLE clause in publication commands.

  3. Add support for EXCEPT TABLE in ALTER PUBLICATION.

  4. Allow table exclusions in publications via EXCEPT TABLE.

  5. Add wait_for_subscription_sync for TAP tests.