On 2019-Jan-23, David Rowley wrote:
> On Wed, 23 Jan 2019 at 04:08, Alvaro Herrera <alvherre@2ndquadrant.com> wrote:
> > Is it possible to avoid the special case for 0 columns by using the
> > UNION ALL syntax I showed?
>
> It would be possible, but my thoughts are that we're moving away from
> the SQL standard by doing so.
Ah, that's a good point that I missed -- I agree with your reasoning.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services