On Sun, Mar 20, 2005 at 10:10:14AM -0800, Jason Leach wrote: > hi, > > I'm having a bit of trouble with my SQL query. It takes about 26h to > run on a 3Ghz PC. I'd really like to speed this up. > > I put this query in a loop to iterate over 20 tables (each table > including summary has 400k records), each time the table name changes. > I this case it's m_alal. Each table has an identical primary key > ECP_TAG but the RATING column is different. What I doing is:
You're going to need to post the EXPLAIN ANALYZE output if you expect any meaningful response... -- Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/ > Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a > tool for doing 5% of the work and then sitting around waiting for someone > else to do the other 95% so you can sue them.
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