Обсуждение: sum(bool)?

hi there,

i want to add up the "true" values of a comparison like

sum(a>b)

it just doesn't work like this

any workaround?

it is postgresql 7.0 under linux

thanks

olaf



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soli-con Engineering Zanger, Dipl.-Ing. (FH) Olaf Marc Zanger
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Olaf Marc Zanger wrote: >hi there, > >i want to add up the "true" values of a comparison like > >sum(a>b) > >it just
doesn'twork like this > >any workaround?
 
select count(*) where a > b;

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Oliver Elphick                                Oliver.Elphick@lfix.co.uk
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