On Thu, Mar 17, 2011 at 09:49:45AM -0500, Kevin Grittner wrote:
> Derrick Rice <derrick.rice@gmail.com> wrote:
> > Kevin Grittner <Kevin.Grittner@wicourts.gov wrote:
> >
> >> there is a feature to probe the end of an index's range in
> >> situations where data skew was often causing less than optimal
> >> plans to be chosen.
> >
> > Was this introduced in 9.0 or was it earlier?
>
> I don't remember when it was added. I took a stab at searching for
> it, but didn't get it figured out; if nobody who knows off-hand
> jumps in, I'll try again when I have more time.
>
I think this is it:
http://archives.postgresql.org/pgsql-committers/2010-01/msg00021.php
Regards,
Ken