Re: PG 18 release notes draft committed

From: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
To: Noah Misch <noah(at)leadboat(dot)com>
Cc: Bruce Momjian <bruce(at)momjian(dot)us>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: PG 18 release notes draft committed
Date: 2025-06-04 22:25:54
Message-ID: CAKFQuwa6rVaMDp5+hLbAMEefV-qP=8oCbsgiGnh4xPkQ=nu-wQ@mail.gmail.com
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On Wed, Jun 4, 2025 at 3:17 PM Noah Misch <noah(at)leadboat(dot)com> wrote:

> On Wed, Jun 04, 2025 at 06:10:38PM -0400, Tom Lane wrote:
> > Bruce Momjian <bruce(at)momjian(dot)us> writes:
>
> > but you are right it is part of the function, not the
> > > trigger:
> >
> > > Execute deferred constraint triggers attached to
> > > non-SECURITY-DEFINER functions as the role that was active at
> > > the time the trigger was fired
> >
> > > Previously such triggers were run as the role that was active at
> > > commit/execution time.
>
> > It's still inaccurate -- to my mind, a "deferred" trigger is one that
> > runs later than the end of the triggering statement. I think you
> > should use "after trigger".

Is this covering the case of executing at the end of an outer SQL command
(thus not deferred) that contains volatile DML functions that temporarily
change current_user within the function?

Also, "fired" is a fairly confusing

> choice of word here; I think most people would take that as meaning
> > the act of running the trigger.

Agreed

> How about
> >
> > Execute AFTER triggers as the role that was active at the
> > moment the trigger event was queued
> >
> > Previously such triggers were run as the role that is active
> > when it is time to execute the trigger (e.g., at COMMIT).
>
> I like that.
>

I do as well.

David J.

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