On Mon, Mar 21, 2011 at 11:32 AM, <t...@fuzzy.cz> wrote: >> Incredible! Setting enable_nestloop off temporarily for the run of this >> script made it run in less than a minute (had been running in 10 or 11 >> minutes). I think you have found a solution for many of my slow running >> scripts that use these same type of joins. Thanks again. >> Julie > > Nice. Can you post EXPLAIN ANALYZE again, so that we can see why this plan > was evaluated as as more expensive before disabling nested loops?
well the problem is obvious -- the planner is estimating ~ 250 loops, when it in fact has to do ~ 60k. That's a two orders of magnitude miss. merlin -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
