On Tue, 2007-03-06 at 12:59 -0500, Tom Lane wrote:
> Jeff Davis <pgsql@j-davis.com> writes:
> > If I were to implement this idea, I think Heikki's bitmap of pages
> > already read is the way to go.
>
> I think that's a good way to guarantee that you'll not finish in time
> for 8.3. Heikki's idea is just at the handwaving stage at this point,
> and I'm not even convinced that it will offer any win. (Pages in
> cache will be picked up by a seqscan already.)
>
I agree that it's a good idea stick with the current implementation
which is, as far as I can see, meeting all of my performance goals.
Regards,Jeff Davis
