Re: Support EXCEPT for ALL SEQUENCES publications

From: Peter Smith <smithpb2250(at)gmail(dot)com>
To: Shlok Kyal <shlok(dot)kyal(dot)oss(at)gmail(dot)com>
Cc: shveta malik <shveta(dot)malik(at)gmail(dot)com>, vignesh C <vignesh21(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Support EXCEPT for ALL SEQUENCES publications
Date: 2026-05-25 07:37:58
Message-ID: CAHut+Ptu0Bkwnr5eetdmFhJC7SsEtKjNe_cTwOg5wF65fjyV8w@mail.gmail.com
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Hi Shlok -

Here are some minor review comments for patch v5-0002.

======
doc/src/sgml/catalogs.sgml

1.
<para>
- True if the table is excluded from the publication. See
- <link linkend="sql-createpublication-params-for-except-table"><literal>EXCEPT</literal></link>.
+ True if the table or the sequence is excluded from the publication. See
+ <link linkend="sql-createpublication-params-for-except"><literal>EXCEPT</literal></link>.

/or the sequence/or sequence/

======
src/backend/catalog/pg_publication.c

check_publication_add_relation:

2.
* Check if relation can be in given publication and throws appropriate
* error if not.

~

Too terse. There are missing words.

SUGGESTION
Check if the target relation is allowed to be specified in the given
publication and throw an error if not.

~~~

3.
if (pri->except)
{
relname = RelationGetQualifiedRelationName(targetrel);
if (pubrelkind == RELKIND_SEQUENCE)
errormsg = gettext_noop("cannot specify \"%s\" in the publication
EXCEPT (SEQUENCE) clause");
else
errormsg = gettext_noop("cannot specify \"%s\" in the publication
EXCEPT (TABLE) clause");
}
else
{
relname = RelationGetRelationName(targetrel);
errormsg = gettext_noop("cannot add relation \"%s\" to publication");
}

~

Wondering why sometimes the error `relname` is fully-qualified and
sometimes it is not. Isn't it better to always be qualified?

======
Kind Regards,
Peter Smith.
Fujitsu Australia

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