Re: Much Ado About COUNT(*)

"Jonah H. Harris" <jharris(at)tvi(dot)edu> writes:
> Tom, Bruce, and others involved in this recurring TODO discussion
> First, let me start by saying that I understand this has been discussed
> many times before; however, Id like to see what the current state of
> affairs is regarding the possibility of using a unique index scan to
> speed up the COUNT aggregate.

It's not happening, because no one has come up with a workable proposal.
In particular, we're not willing to slow down every other operation in
order to make COUNT-*-with-no-WHERE-clause faster.

regards, tom lane