From: | vignesh C <vignesh21(at)gmail(dot)com> |
---|---|
To: | "Jonathan S(dot) Katz" <jkatz(at)postgresql(dot)org>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
Cc: | Pg Docs <pgsql-docs(at)lists(dot)postgresql(dot)org> |
Subject: | Re: clarifying trigger/rule behavior on logical replication subscribers |
Date: | 2023-06-07 10:39:47 |
Message-ID: | CALDaNm1fAaeOhdTts3LgXs_e1TPZke3-HqFA9b8ZjVXOM66H5Q@mail.gmail.com |
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Lists: | pgsql-docs |
On Wed, 7 Jun 2023 at 10:17, Jonathan S. Katz <jkatz(at)postgresql(dot)org> wrote:
>
> Hi,
>
> While answering a question on "do triggers fire on a logical replication
> subscriber by default?" I tried to look up a reference to this behavior
> in the docs. There wasn't a clear reference point, but on the
> architecture page[1], I found this line that was closest to the answer:
>
> "The apply process on the subscriber database always runs with
> session_replication_role set to replica, which produces the usual
> effects on triggers and constraints."
>
> which assumes that the reader knows what the "usual effects" are.
>
> Attached is a patch that disambiguates this.
>
Thanks for the patch, one small change required, "literal>" should be
"<literal>":
+ enable triggers and rules on a table using the
+ <link linkend="sql-altertable"><command>ALTER TABLE</command></link> command
+ and the literal>ENABLE TRIGGER</literal> and <literal>ENABLE RULE</literal>
Regards,
Vignesh
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