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To use calculated field or not?
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Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Versions des environnements
Visual FoxPro:
VFP 9 SP1
Divers
Thread ID:
01532936
Message ID:
01532984
Vues:
35
>>>>
>>>>Thank you for clarifying. Sorry that I didn't pay attention to the semicolons. I will test this approach in both VFP and SQL Server. Initially I thought I would do it using a Function (with pretty much similar code that you wrote). But view is probably better approach (although I don't yet understand why).
>>>
>>>
>>>> But view is probably better approach (although I don't yet understand why).
>>>
>>>
>>>I think it is because a view is faster.
>>>
>>>btw - I have used nvl() in case there are no invoices yet. I think the sqlserver equivalent is ISNULL() http://msdn.microsoft.com/en-us/library/ms184325.aspx
>>
>>Thank you for the NVL() and ISNULL() explanation.
>
>If you want to do it for particular Order, you have two choices. Select * from OrdersView where OrderID = @OrderId
>
>or alternatively create the above as a table values inline function, so it will be
>
>select * from dbo.OrdersInfo(@OrderID)

Thank you.
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