"Jim C. Nasby" <jim(at)nasby(dot)net> writes:
> Not to drag this out further, but you might want to hold off on that
> patch. 7.4 is supposed to use indexes for max/min.
Where did you get that idea?
There's been no change in the basic problem, which is that no one has
proposed a reasonably general method of translating aggregates into
index manipulations. Postgres has an extremely general, extensible
concept of aggregates, and we're not going to mess it up with some
poorly-designed hack. But show me a clean design and implementation,
and it'll go in.
regards, tom lane