> How many rows in usage_access? How many groups do you expect?
> (Approximate answers are fine.) What PG version is this, and
> what's your sort_mem setting?
>
> regards, tom lane
I believe there are about 40,000,000 rows, I expect there to be about
10,000,000 groups. PostgreSQL version is 7.3.2 and the sort_mem is at the
default setting.
(I know that's an old version. We've been testing with 7.4 now and are
nearly ready to upgrade.)
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