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Re: Speed problem on large tables
Posted by: Mike Hillyer
Date: October 12, 2004 04:55PM

Ok, this almost certainly has to do with GROUPing on a prefix. Ok, one suggestion would be upgrading to MySQL 4.1, the optimizer gets smarter every version, I can't guarentee an improvement but you never know. You might try increasing the sort_buffer setting to allow for more memory for the sort, and you might try making temporary tables. Query all the items for site ID 5 into a table, stripped to prefixes, then group by them and do the count.

Mike Hillyer, Technical Writer
Office: +1 403-380-6535


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Written By
October 11, 2004 03:19AM
Re: Speed problem on large tables
October 12, 2004 04:55PM

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