On Tue, Jul 28, 2009 at 1:08 AM, David Wilson<david.t.wilson@gmail.com> wrote:
> On Mon, Jul 27, 2009 at 7:52 PM, Janet Jacobsen<jsjacobsen@lbl.gov> wrote:
>
>> Can you suggest other strategies?
>
> Something that might be easier to play with is to create a (or
> several, to speed up other queries) functional index on the comparison
> between rbscore and the cutoff.
I think it would be even more interesting to have partial indexes --
ie specified with "WHERE rbscore < cutoff".
I'm actually wondering if partitioning is really what you want. You
might prefer to just keep two entirely separate tables. One that has
all the data and one that has a second copy of the desirable subset.
Kind of like a "materialized view" of a simple query with the where
clause of "rbscore < cutoff".
--
greg
http://mit.edu/~gsstark/resume.pdf
