> Sometime between yesterday and today queries in the form of
> "select * from t where t.f like 'k%'" have been broken so that they
> never use the index (on win32, not sure about others).
>
> On win32, at least, they have been broken for a while but this was due
> to a known issue based on the locales. AFAICT, the current cvs has
> addressed this issue and (show lc_collate returns C) there seems to be
> no reason why the queries aren't working properly.
>
> Merlin
Did you do an ANALYZE on the table?
Are there a lot of duplicate keys?
How big is the table?
What does the "explain" look like?