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Question on the VFP 9 group by
Message
De
06/04/2006 14:09:19
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9 SP1
OS:
Windows XP SP2
Network:
Windows 2000 Server
Database:
Visual FoxPro
Divers
Thread ID:
01111136
Message ID:
01111137
Vues:
21
>I need to find the employee id for the employee that has the most hours for each given work type.
>
>In VFP 6 the following SQL Select would work fine:
>
SELECT  worktype, MAX(asgnhrs), emplid FROM john GROUP BY worktype
>
>In VFP 9 I am trying to do things the new way without useing the set enginebehavior 70 command. Of course this generates the "Invaid Group By" error becuase I have not included the emplid in the group by. But, if I did, I would get all the emplyees. What do I need to change to get only the emplyee id with the max hours?
>TIA.

You must include all the fields, except the aggregate fields, in the group by list
>
SELECT  worktype, MAX(asgnhrs), emplid FROM john GROUP BY 1,3
or
>
SELECT  worktype, MAX(asgnhrs), emplid FROM john GROUP BY worktype,emplid
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