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Message Posted: Wed, 02 Jan 2008 @ 15:09:59 GMT


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Subj:		Re: Finding previous value

From:		Rob Paller

You can use the MIN or MAX window aggregates and specify ROWS BETWEEN 1 FOLLOWING and 1 FOLLOWING or ROWS BETWEEN 1 PRECEDING and 1 PRECEDING to get either the subsequent or preceding values, respectively.

Your example is vague as you don't indicate how the ADVC_NUM is assigned and the effective dates are the same making it difficult to determine how to order your partition.

Hope this helps.

Regards,

Rob