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Can Subquery have GROUP BY?
Message
 
General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Environment versions
Visual FoxPro:
VFP 9 SP1
Miscellaneous
Thread ID:
01411733
Message ID:
01411736
Views:
25
>>Hi,
>>
>>I am getting error "invalid subquery" when using the following SQL Select:
>>
>>
>>select TABLE1.* FROM TABLE1 WHERE ID_FLD IN (select TABLE2.ID_FLD, SUM(
>> TABLE2.QUANTITY)  as USED_QUANTITY FROM TABLE2 GROUP BY TABLE2.ID_FLD) 
>>
>>
>>The only thing that I see that could be causing this error is GROUP BY. Is this correct?
>
>You need to group by in the inner select.
>
>But what exactly do you want to achieve here?
>
>select TABLE1.*, SumInfo.Used_Quantity FROM TABLE1 
>INNER JOIN (select TABLE2.ID_FLD, SUM(
> TABLE2.QUANTITY)  as USED_QUANTITY FROM TABLE2 GROUP BY TABLE2.ID_FLD) SumInfo 
>on Table1.ID_Fld = SumInfo.ID_Fld
>
>If you want to check FLD IN (SubSelect), then SubSelect MUST return only one field.

Thank you. I think you are right. I will try your suggestion.
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