|From:||Gary Stainburn <gary(dot)stainburn(at)ringways(dot)co(dot)uk>|
|Subject:||Re: join/group/count query.|
|Views:||Raw Message | Whole Thread | Download mbox|
On Wednesday 20 December 2006 18:06, Hector Villarreal wrote:
> HI in reading this is it possible what was really intended :
> Sum(case when o_model = 5 then 1 else NULL end) as KA
> That would provide a count of all records meeting that condition.
> Otherwise the count( approach will not do that.
Because the else is NULL, count does work. Although I would imagine sum will
also work, count more reflects the logic, i.e. the number of times that
condition is true
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