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Message Posted: Mon, 17 Jun 2002 @ 09:59:54 GMT

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Peter,

If you've got a column which is used for selection and/or joining which also contains very skewed data values (e.g. 80% of rows contain 'X') then collecting stats on that column is basically mandatory for efficient query processing.

Cheers,

Dave

Ward Analytics Ltd: Information in motion (www.ward-analytics.com)

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