Re: Calculating product from rows - (aggregate product )

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От Dennis Brakhane
Тема Re: Calculating product from rows - (aggregate product )
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Msg-id 226a19190905041428o15959589j3974226ad2420f46@mail.gmail.com
обсуждение исходный текст
Ответ на Re: Calculating product from rows - (aggregate product )  (Jasen Betts <jasen@xnet.co.nz>)
Ответы Re: Calculating product from rows - (aggregate product )  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Mon, May 4, 2009 at 12:53 PM, Jasen Betts <jasen@xnet.co.nz> wrote:
> select exp(sum(ln( thiscolumn ))) from foo;

Keep in mind that it won't work when the table containts negative
numbers, though (or zeros, but since in this case the product is also
zero, it doesn't matter)

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