Learn it to not generate with "WITH IN (subq)", is this can be quite slow on postgresql. Use joins instead. looks like planner was wrong about rowcount in one place: Hash IN Join (cost=2204.80..4809.31 rows=292 width=202) (actual time=12.856..283.916 rows=15702 loops=1) I have no idea why, probably more knowledgeable guys will know more about why. But overall, all other stats seem to be okay. What's the default_statistics_target setting in the postgresql set to? One thing tho, what's the version, and platform. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance