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Re: Adding Order by slows query...
Posted by: Harrison Fisk
Date: October 14, 2004 09:53AM

Hi,

If you gave the full EXPLAIN output and the table structures it would be very helpful. Most likely you are going to have to create some combined indexes over the WHERE conditions and the ORDER BY columns. Something like ZipListMatrix INDEX(ZipID, ListID), and possibly something like UserList(UserInfoId, ListID) as well.

Regards,

Harrison

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