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Re: Selects are slow when blob field?
Posted by: Sergey Petrunya
Date: November 28, 2004 11:14PM

How are the fields indexed? Does EXPLAIN for the query contain "Using index" ?
If you don't have an index on (tablename, recordid, datalength) or (recordid, tablename, datalength) please add, it should allow MySQL to avoid reading the blob field.

Sergey Petrunia, Software Developer
MySQL AB, www.mysql.com
My blog: http://s.petrunia.net/blog

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