Re: stddev returns 0 when there is one row

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От Tom Lane
Тема Re: stddev returns 0 when there is one row
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Msg-id 742.1050942070@sss.pgh.pa.us
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Ответ на Re: stddev returns 0 when there is one row  (Murthy Kambhampaty <murthy.kambhampaty@goeci.com>)
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Murthy Kambhampaty <murthy.kambhampaty@goeci.com> writes:
> Tom, would it be too much trouble to program these in (as STDEV_POP_G and
> STDEV_SMPL_G or some variant?

I'm not volunteering, no.  (For starters, I think you'd need to upgrade
the aggregate code to allow multiple-input aggregates.  Which is worth
doing, but I do not expect to have time to think about such things for
7.4.)

            regards, tom lane


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