Re: getting the number of rows affected by a query

On 16/11/2007, Sam Mason <sam(at)samason(dot)me(dot)uk> wrote:
> On Fri, Nov 16, 2007 at 12:51:07PM +0000, Raymond O'Donnell wrote:
> > On 16/11/2007 10:02, Sam Mason wrote:
> >
> > > SELECT COUNT(*) FROM (
> > > DELETE FROM foo RETURNING 1) x;
> >
> > I haven't played with this yet, but AFAICS this will simply return the
> > integer value "1".
>
> I currently get a syntax error, hence the way I wrote my message.
>
> I'd not expect it to return 1 though. The "1" is there simply to be
> easy to evaluate, maybe "*" would have been better. This 1 would get
> returned to the outer query, which would end up counting the number of
> rows deleted.
>

Using RETRNING clause in subselects are not supported yet. Look to ToDo.

Regards
Pavel Stehule