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Get a rownumber
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Information générale
Forum:
Microsoft SQL Server
Catégorie:
Autre
Titre:
Divers
Thread ID:
01525672
Message ID:
01525686
Vues:
32
>>>Hi All -
>>>
>>>I need to update a specific row within a table something like this:
>>>
>>>UPDATE mytable SET myfield = 10 WHERE (ROWNUMBER = 4)
>>>
>>>but I can't find a good way to identify the row. I've looked at ROW_NUMBER(), IDENTITY(), and RANK(), but none of them seem to fit. Could someone explain how to do this?
>>>
>>>Thanks
>>
>>You need a key somehow. This isn't VFP. What are the field values that make your 4th row unique? Make them the where clause.
>
>Thanks William.
>My table has a fixed number of rows so I just added another column with rownumber. It seems to work OK. I was just hoping to make it a little simpler with a function like RecordNo().
>
>Thanks for the clarification.
>
>And now my mantra "Why 'O Why can't MS make SQLServer/NET as easy as VFP?" They should get Calvin and Levy on the team.

In almost every table I create in SQL Server, I create an identity column that I can always use as the primary or at least a unique key. The identity column takes care of itself, so once you create it you don't have to worry about populating it.
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