Re: Preformance in multiple join
Posted by: Felix Geerinckx
Date: January 17, 2007 08:24AM

Rasmus Toftegaard Wrote:

> When i use Sum(duration) as duration the duration is too
> big because some durations is multiplied by 3,2 or 1.

Depending on the exact GROUP BY clause, it should be possible to use combinations of

COUNT(...) and COUNT(DISTINCT ...) to compensate for the multiplication factors.

--
felix
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Re: Preformance in multiple join
January 17, 2007 08:24AM


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