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Re: BUG #3320: Error when using INSERT...RETURNING as a subquery

From: David Fetter <david(at)fetter(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Jan Szumiec <jan(dot)szumie(at)infiniteloop(dot)eu>, pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #3320: Error when using INSERT...RETURNING as a subquery
Date: 2007-05-29 16:59:15
Message-ID: 20070529165915.GA1912@fetter.org (view raw or flat)
Thread:
Lists: pgsql-bugs
On Tue, May 29, 2007 at 09:41:38AM -0400, Tom Lane wrote:
> "Jan Szumiec" <jan(dot)szumie(at)infiniteloop(dot)eu> writes:
> > UPDATE items SET (type, post_id) = (INSERT INTO efforts (effort) VALUES
> > (667) RETURNING 'Item', id) WHERE id = 1937
> 
> Sorry, RETURNING is only supported at the top level of a query.

What would be involved with making this possible?  What we have at the
moment is a pretty clear POLA violation because unlike the rest of the
row-returning objects (tables, views, SRFs and VALUES() clauses), only
RETURNING can't be used in a subquery.

Cheers,
D
-- 
David Fetter <david(at)fetter(dot)org> http://fetter.org/
phone: +1 415 235 3778        AIM: dfetter666
                              Skype: davidfetter

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Next:From: Gregory StarkDate: 2007-05-29 17:10:48
Subject: Re: BUG #3320: Error when using INSERT...RETURNING as a subquery
Previous:From: Magnus HaganderDate: 2007-05-29 16:53:09
Subject: Re: BUG #3318: PostgreSQL : server process (PID 3480) was terminated by signal 5

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