> No, the contents can be of mixed case. Where does that leave things?

**Index the length of the entire column.** It then should not need to
have to do the filesort. Actually the binary option would not have
really helped. The explain should say 'Using Index'. Get back to me on
this and tell me the results.

> In a working environment I'd never be querying on this table alone,
> it would always be joined in to other tables that would limit things
> in some way, but these don't seem to be affecting things. The
suggestions
> other people have made to try to get it to do the smaller queries
first
> don't seem to be having much effect, unfortunately.

Optimize the join once you know how to optimize its parts. One thing at
a time.

--steve-


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