Doc: clarify the restrictions of AFTER triggers with transition tables.

Etsuro Fujita <efujita@postgresql.org>

Commit: f5a49328f89bcb38e2b03610289d5eaaede94893
Author: Etsuro Fujita <efujita@postgresql.org>
Date: 2025-08-02T09:30:05Z
Releases: 13.22
Doc: clarify the restrictions of AFTER triggers with transition tables.

It was not very clear that the triggers are only allowed on plain tables
(not foreign tables).  Also, rephrase the documentation for better
readability.

Follow up to commit 9e6104c66.

Reported-by: Etsuro Fujita <etsuro.fujita@gmail.com>
Author: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>
Reviewed-by: Etsuro Fujita <etsuro.fujita@gmail.com>
Discussion: https://postgr.es/m/CAPmGK16XBs9ptNr8Lk4f-tJZogf6y-Prz%3D8yhvJbb_4dpsc3mQ%40mail.gmail.com
Backpatch-through: 13

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doc/src/sgml/ref/create_trigger.sgml modified +5 −3

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