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Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Titre:
Versions des environnements
Visual FoxPro:
VFP 9 SP2
OS:
Windows Server 2012
Network:
Windows 2008 Server
Database:
MS SQL Server
Application:
Desktop
Divers
Thread ID:
01619650
Message ID:
01619673
Vues:
71
>>I'm trying to select out from a parent table to a child table. The child can have multiple entries but I want to return the line with the largest value. I've tried a couple of select combinations but I'm not getting the correct result
>>
>>PARENT
>>1 Name1
>>2 Name2
>>3 Name3
>>
>>CHILD
>>1 12 Code1
>>2 19 Code2
>>2 16 Code3
>>3 10 Code4
>>3 13 Code5
>>
>>I want the result to be
>>Name1 Code1
>>Name2 Code2
>>Name3 Code5
>>
>>~M
>
>
>SELECT Parent.Name,;
>       Child.Code;
>FROM Parent;
>INNER JOIN (SELECT Child.ParentFld, Child.Code;
>               FROM Child;
>            INNER JOIN (SELECT ParentFld, MAX(IdFld) AS IdFld;
>                               FROM Child;
>                        GROUP BY ParentFld) Chld;
>                  ON Child.ParentFld = Chld.ParentFld AND Child.IdFld = Chld.IdFld) Child;
>       ON Child.ParentFld = Parent.IdFld
>
Thanks I'll give it a go. Had something similar but got a warning on too many levels or similar.
~M
Go raibh maith agat

~M
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