On Fri, Feb 9, 2018 at 7:42 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:
> "David G. Johnston" <david.g.johns...@gmail.com> writes:
> > On Fri, Feb 9, 2018 at 6:23 AM, Michael Paquier <mich...@paquier.xyz>
> >> On Fri, Feb 09, 2018 at 12:02:57PM +0100, Pavel Stehule wrote:
> >>> Blocking subqueries in CALL parameters is possible solution.
> > To me this feels like an interaction between two features that users are
> > going to expect to just work.
> Meh. It doesn't look significantly different to me than the restriction
> that you can't have sub-selects in CHECK expressions, index expressions,
> etc. Obviously we need a clean failure like you get for those cases.
> But otherwise it's an OK restriction that stems from exactly the same
> cause: we do not want to invoke the full planner in this context (and
> even if we did, we don't want to use the full executor to execute the
CALL test(func(10)); --with or without an extra set of parentheses
work here too?