When to create indexes on custom tables?

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When to create indexes on custom tables?

06-03-2007, 09:49 PM

Eikinskjaldi Eikinskjaldi is offline

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the file sort means that the system has to do an extra pass on the table to retrieve the rows in sorted order. Nested queries are tricky, you can get some optimisation by setting up a query cache, but if it were me I would use mysql v 5+ and set up a view.

First run the nested query in explain to make sure it is properly indexed.

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