>>Actually I just tried your and Dragan suggestion and with the GROUP BY it works. The code:
>>
>>>
>>>select ID_FIELD, COUNT(DISTINCT WO_NUMBER) AS TOT_NUM
>>> from MyTable
>>>WHERE <SomeCondition> GROUP BY ID_FIELD
>>>HAVING COUNT(DISTINCT WO_NUMBER) > 5
>>>
>>
>>And the resulting query I get is what I am looking for. So it works.
>>
>>But my questions are
>>1. Doesn't the above code make the COUNT to be executed twice (thus increasing the time of the execution)
>
>No
>
>>2. Why in case of VFP using the calculated name (AS) works? Does it mean that with VFP data the execution time would be better?
>>
>>Thank you.
>
>Because VFP is not really ANSI complaint and has its own implementation of SQL language. That's why VFP has different syntax. I don't know if internally in VFP that expression is calculated more than needed but in SQL Server in doesn't calculate in both places.
How did you verify that in SQL Server having the same expression ( (COUNT(....))>5) ) is not being calculated in both places?
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