Re: Query completed in < 1s in PG 9.1 and ~ 700s in PG 9.2

Merlin Moncure <mmoncure@gmail.com> writes:
> Problem could also be no statistics (run ANALYZE to test) or some
> other configuration problem (like index locale), or a bona fide
> regression.

I'm wondering about join_collapse_limit in particular --- if that wasn't
cranked up in the 9.1 installation, it would be pure luck if you got a
good query plan for an example like this.  Maybe that and/or other
parameter settings didn't get transposed to the 9.2 installation.

            regards, tom lane