On Tue, Jul 20, 2004 at 10:06:08AM -0700, Josh Berkus wrote: > Actually, quick question -- have you tried setting enable_mergjoin=false to > see the plan the system comes up with? Is it in fact faster?
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It is significantly faster -- 1200ms vs. 1900ms (on 7.4, at least). Some of the merge joins are changed to nested loop joins, though, which probably reduces the overall performance, so I guess there's more to gain if I can get it to convert only that merge join to a hash join. The sum and multiplication parts still take 400ms or so, though (is this normal? :-) ), so I guess there's a lower limit :-) I could of course post the updated query plan if anybody is interested; let me know. (The data is still available if anybody needs it as well, of course.) /* Steinar */ -- Homepage: http://www.sesse.net/ ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
