Re: Skipping schema changes in publication

shveta malik <shveta.malik@gmail.com>

From: shveta malik <shveta.malik@gmail.com>
To: vignesh C <vignesh21@gmail.com>
Cc: Peter Smith <smithpb2250@gmail.com>, Amit Kapila <amit.kapila16@gmail.com>, Masahiko Sawada <sawada.mshk@gmail.com>, "Hayato Kuroda (Fujitsu)" <kuroda.hayato@fujitsu.com>, Shlok Kyal <shlok.kyal.oss@gmail.com>, Nisha Moond <nisha.moond412@gmail.com>, Ashutosh Sharma <ashu.coek88@gmail.com>, "David G. Johnston" <david.g.johnston@gmail.com>, Dilip Kumar <dilipbalaut@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>, shveta malik <shveta.malik@gmail.com>
Date: 2026-03-18T04:10:24Z
Lists: pgsql-hackers
On Tue, Mar 17, 2026 at 9:21 PM vignesh C <vignesh21@gmail.com> wrote:
>
>
> These comments are addressed in the v65 version patch attached. Also
> the comments from [1] have been addressed in this.
> [1] - https://www.postgresql.org/message-id/CAA4eK1%2BmSpCzj%2BB2PW_68DJpXHA0KMgT9Nrz9P83_c1vdKya8g%40mail.gmail.com
>

Thanks, few trivial things:

1)
In the doc we talk about the first two variants and then the third
variant. IIUC, you need to change variants to match the new details,
i.e.

Change these:
ALTER PUBLICATION name ADD publication_object [, ...]
ALTER PUBLICATION name SET { publication_object [, ...] |
publication_all_object [, ... ] }
ALTER PUBLICATION name DROP publication_drop_object [, ...]

to:
ALTER PUBLICATION name ADD publication_object [, ...]
ALTER PUBLICATION name DROP publication_drop_object [, ...]
ALTER PUBLICATION name SET { publication_object [, ...] |
publication_all_object [, ... ] }

or change the details to match variants.

2)

+ /*
+ * Publications contain either only EXCEPT entries or only included
+ * tables. So checking a single tuple is sufficient.
+ */
+ result = !pubrel->prexcept;

The command looks slightly misleading, can we please change it to:

For any publication, pg_publication_rel contains either only EXCEPT
entries or only explicitly included tables. Therefore, examining the
first tuple is sufficient to determine table inclusion.

3)
publication_add_relation() contains repetitive comments at both the
beginning and end of the function regarding invalidation of EXCEPT
tables. We can keep the first one (slightly rephrased, if needed, to
incorporate the second) and remove the latter.

thanks
Shveta



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.