Re: Polymorphic arguments and composite types - Mailing list pgsql-hackers

On Fri, 2007-10-05 at 10:32 -0700, Stephan Szabo wrote:
> On Fri, 5 Oct 2007, Simon Riggs wrote:
> 
> > Because we already do exactly that here:
> >
> >     select 1, (select col2 from c), 3;
> >
> > The inner select returns a ROW, yet we treat it as a single column
> > value.
> 
> The inner select does not return a row. It's not a <row subquery>, it's a
> <scalar subquery>.

Thanks Stephan, Tom already explained that.

My comments above were in response to "Why would you think that?"

--  Simon Riggs 2ndQuadrant  http://www.2ndQuadrant.com