On Tue, Aug 20, 2013 at 7:25 AM, Andres Freund <andres@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.stehule@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