Tom,
* Tom Lane (t...@sss.pgh.pa.us) wrote:
> Thomas Kellerer writes:
> > I assumed that the count() wouldn't increase the runtime of the query as
> > the result of the row_number() can be used to calculate that.
>
> No such knowledge exists in Postgres. Given our general approach in which
>
Thomas Kellerer writes:
> I assumed that the count() wouldn't increase the runtime of the query as the
> result of the row_number() can be used to calculate that.
No such knowledge exists in Postgres. Given our general approach in which
functions (including window functions) are black boxes, i
