Peter Eisentraut <[EMAIL PROTECTED]> writes: > Am Freitag, 7. März 2008 schrieb Tom Lane: >> IIRC, egjoinsel is one of the weak spots, so tests involving planning of >> joins between two tables with large MCV lists would be a good place to >> start.
> I have run tests with joining two and three tables with 10 million rows each, > and the planning times seem to be virtually unaffected by the statistics > target, for values between 10 and 800000. It's not possible to believe that you'd not notice O(N^2) behavior for N approaching 800000 ;-). Perhaps your join columns were unique keys, and thus didn't have any most-common-values? regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers