Re: sequential scan performance

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От Steinar H. Gunderson
Тема Re: sequential scan performance
Дата
Msg-id 20050529134712.GA2987@uio.no
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Ответ на sequential scan performance  (Michael Engelhart <mengelhart@mac.com>)
Список pgsql-performance
On Sun, May 29, 2005 at 08:27:26AM -0500, Michael Engelhart wrote:
> this is a query that our system needs to do a LOT.   Is there any way
> to improve the performance on this either with changes to our query
> or by configuring the database deployment?   We have an index on
> city_name but when using the % operator on the front of the query
> string postgresql can't use the index .

Try tsearch2 from contrib, it might help you.

/* Steinar */
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