Re: BUG #6067: In PL/pgsql, EXISTS(SELECT ... INTO...) fails

Tom Lane wrote:
> "David Fetter" <dfetter(at)vmware(dot)com> writes:
> > IF EXISTS (SELECT 1 INTO STRICT i) THEN
> > RAISE NOTICE '%', a;
> > END IF;
>
> Umm ... are you just complaining that the error message isn't very
> helpful, or are you actually expecting that to do something useful?
> If the latter, what exactly? I'm particularly confused by your use
> of the STRICT option here, because if we did support that, I would
> expect the STRICT to throw an error if there were not exactly one
> matching row, making the EXISTS test 100% pointless.
>
> But the short answer is that we don't support INTO in sub-selects,
> and in general I doubt that we ever will, since in most cases the
> behavior wouldn't be very well-defined. It might be worth a TODO
> to provide a better error message than "syntax error", though.

Is it worth documenting, fixing, or adding this to the TODO list?

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ It's impossible for everything to be true. +