On Thu, Sep 24, 2009 at 8:22 AM, Jared Beck <ja...@singlebrook.com> wrote: > Should we try to improve statistics collection for that column > (variableid) by using ALTER TABLE ... ALTER COLUMN ... SET STATISTICS?
It's worth a try, but I'm not sure it's going to help much. The LIKE condition is hard for the planner to estimate at present. > In other words, if the row estimate were perfect would we be likely > to get a better plan? Or is that impossible to speculate on? Good row estimates are the key to happiness, but I don't know whether it will actually change the plan in this instance. > Thanks again. Already you've been a big help. We love postgres and > are very happy with our upgrade to 8.4 so far! Glad to hear it. ...Robert -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
