2013/8/20 Merlin Moncure <mmonc...@gmail.com>

> On Tue, Aug 20, 2013 at 7:25 AM, Andres Freund <and...@2ndquadrant.com>
> wrote:
> > On 2013-08-20 14:15:55 +0200, David E. Wheeler wrote:
> >> Hi Pavel,
> >>
> >> On Aug 20, 2013, at 2:11 PM, Pavel Stehule <pavel.steh...@gmail.com>
> wrote:
> >>
> >> >>     david=# DO $$
> >> >>     david$# BEGIN
> >> >>     david$#     WITH now AS (SELECT now())
> >> >>     david$#     PERFORM * from now;
> >> >>     david$# END;
> >> >>     david$# $$;
> >> >>     ERROR:  syntax error at or near "PERFORM"
> >> >>     LINE 4:     PERFORM * from now;
> >> >>                 ^
> >> >> Parser bug in PL/pgSQL, perhaps?
> >> >
> >> > no
> >> >
> >> > you cannot use a PL/pgSQL statement inside SQL statement.
> >>
> >> Well, there ought to be *some* way to tell PL/pgSQL to discard the
> result. Right now I am adding a variable to select into but never otherwise
> use. Inelegant, IMHO. Perhaps I’m missing some other way to do it?
> >>
> >> If so, it would help if the hint suggesting the use of PERFORM pointed
> to such alternatives.
> >
> > Not that that's elegant but IIRC PERFORM (WITH ...) ought to work. I
> > don't think the intermingled plpgsql/sql grammars allow a nice way right
> > now.
>
> I think the way forward is to remove the restriction such that data
> returning queries must be PERFORM'd


I disagree, current rule has sense.

Pavel


>
> merlin
>

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