On Mon, Oct 06, 2003 at 09:23:05 -0600,
Kathy Zhu <Kathy.Zhu@sun.com> wrote:
> That was also one of my guesses why groupby takes longer, although it is not
> mentioned in the doc.
If you want to know how a query is being done, you can use explain
(or explain analyze if you want timing information) to see the
plan.