Re: MERGE ... RETURNING

From: Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>
To: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
Cc: Vik Fearing <vik(at)postgresfriends(dot)org>, Isaac Morland <isaac(dot)morland(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: MERGE ... RETURNING
Date: 2023-02-07 10:56:52
Message-ID: CAEZATCWX7oXv=LKK=wde4UTduS1Qow0myUAKeEAoiw9nUoj_Kg@mail.gmail.com
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On Mon, 23 Jan 2023 at 16:54, Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com> wrote:
>
> On Sun, 22 Jan 2023 at 19:08, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> wrote:
> >
> > Regarding mas_action_idx, I would have thought that it belongs in
> > MergeAction rather than MergeActionState. After all, you determine it
> > once at parse time, and it is a constant from there onwards, right?
>
> Oh, yes that makes sense (and removes the need for a couple of the
> executor changes). Thanks for looking.
>

Attached is a more complete patch, with that change and more doc and
test updates.

A couple of latest changes from this patch look like they represent
pre-existing issues with MERGE that should really be extracted from
this patch and applied to HEAD+v15. I'll take a closer look at that,
and start new threads for those.

Regards,
Dean

Attachment Content-Type Size
support-merge-returning-v3.patch text/x-patch 85.2 KB

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