Re: obtaining difference between minimum value and next in size

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От Tom Lane
Тема Re: obtaining difference between minimum value and next in size
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Msg-id 27014.1290008556@sss.pgh.pa.us
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Ответ на obtaining difference between minimum value and next in size  ("John Lister" <john.lister-ps@kickstone.com>)
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"John Lister" <john.lister-ps@kickstone.com> writes:
> Is it possible to obtain the difference between just the minimum price and the next one up per product,

If you're using >= 8.4, try a window function.  LEAD or LAG ought to
do it.
        regards, tom lane

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