aa <ghevge@gmail.com> writes:
> If you call the action of "sifting" ordering, then yes. If you don't call
> it ordering, then no.
> In essence, is the output of a filtering mechanism, done in a single result
> set pass. And this pass should be the same pass in charge of collecting the
> result set in the first place.
Sounds a lot like a WHERE clause to me.
regards, tom lane
