Re: Why does this query take 2 minutes?
Posted by:
James Day
Date: February 03, 2005 08:43PM
The optimiser won't necessarily pick the best index but it'll usually make a fair try. Occasionally you're probably going to have to give it guidance with use index clauses. Keeping the total index count down and using the first part of composite indexes where practical reduces the chance of the wrong index choice, by limiting its options.
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Re: Why does this query take 2 minutes?
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