Re: Improper const-evaluation of HAVING with grouping sets and subquery pullup

Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk> writes:
> "Tom" == Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
> Tom> Uh ... but I thought the point here is that the outputs aren't
> Tom> really constant in the presence of grouping sets.

> select x, y, sum(z) from (select 1 as x, 2 as y, 3 as z) s
> group by grouping sets (x,y);

> x and y aren't constants, but z is.

OK, but that just means we should put PHV wrapping around only the
grouping-set columns.

BTW, also need to think about GS expressions, eg

select x+y, sum(z) from (select 1 as x, 2 as y, 3 as z) s
group by grouping sets (x+y);

Not real sure what needs to happen here.

regards, tom lane