"Ozer, Pam" <pozer@xxxxxxxxxxxxxx> writes: > Unfortunately I have not received a response on this question. Is more > information needed? Does anyone have any ideas why the estimates may be > bad? Or what I might be able to do to speed this up? The most likely explanation for the bad rowcount estimates is that there is correlation between the regionid/countyid/cityid columns, only the planner doesn't know it. Can you reformulate that data representation at all, or at least avoid depending on it as a join key? regards, tom lane -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
