"Kevin Grittner" <kevin.gritt...@wicourts.gov> writes: > Andres Freund <and...@anarazel.de> wrote: > >> long plan times (minutes and up) > > Wow. I thought I had some pretty complex queries, including some > which join using several views, each of which has several joins; but > I've never gone to multiple seconds on plan time (much less multiple > minutes!) without very high statistics targets and many indexes on the > tables. Any rough estimates on those?
My money's still on very large statistics targets. If you have a lot of columns and 1,000-element arrays for each column that can get big pretty quickly. But that doesn't explain the bitmap ops being important. Hm. Actually having a lot of columns and then joining a lot of tables could mean having fairly large bitmapsets. -- Gregory Stark EnterpriseDB http://www.enterprisedb.com Ask me about EnterpriseDB's 24x7 Postgres support! -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
