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Counting with IIF()
Message
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Versions des environnements
Visual FoxPro:
VFP 9 SP2
OS:
Windows 10
Network:
Windows 2008 Server
Database:
MS SQL Server
Application:
Web
Divers
Thread ID:
01625867
Message ID:
01625869
Vues:
63
>Hi,
>
>When I do the following SQL Select with SQL Server I get the expected results:
>
>SELECT employee, COUNT( case when type= '0' then 1 else null end ) as COUNT_0, COUNT( case when type= '1' then 1 else null end ) as 
>COUNT_1 FROM MyTable GROUP BY employee
>
>
>But when I do the following in VFP, I don't get the expected results:
>
>SELECT employee, COUNT( IIF( type= '0', 1, 0 ) ) as COUNT_0, COUNT( IIF( type = '1',1,0)) as COUNT_1 FROM MyTable WHERE 
>GROUP BY employee
>
>
>In VFP expression all records are counted. How do I make VFP SQL Select work as the SQL Server?

That is because you didn't use the same as in SQL Server:
COUNT( IIF( type= '0', 1, NULL ))
NULL not zero :-)

But I prefer SUM anyway (don't know why, have no logical explanations :-))
SUM(IIF( type= '0', 1, 0))
Against Stupidity the Gods themselves Contend in Vain - Johann Christoph Friedrich von Schiller
The only thing normal about database guys is their tables.
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