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

On Tue, May 29, 2007 at 09:41:38AM -0400, Tom Lane wrote:
> "Jan Szumiec" <jan.szumie@infiniteloop.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@fetter.org> http://fetter.org/
phone: +1 415 235 3778        AIM: dfetter666
                              Skype: davidfetter

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