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Problem using GETDATE() to generate a key
Message
De
22/08/2013 06:51:00
 
 
À
22/08/2013 05:33:06
Information générale
Forum:
Microsoft SQL Server
Catégorie:
Syntaxe SQL
Versions des environnements
SQL Server:
SQL Server 2008
Application:
Web
Divers
Thread ID:
01580950
Message ID:
01580953
Vues:
35
>Hi
>
>I'm dealing with a system that in one area uses keys generated keys using GETDATE().
>
>This is producing duplicates sometimes.
>
>If I select GETDATE() in a loop it returns the same datetime through a lot of iterations . How often is the date and time refreshed and what sort of delay would I need to introduce to ensure I got a new date and time on each key generation.
>
>
>Thanks

Think the precision is one millisecond

Don't think a datetime is a good idea for a key.

Can you use a guid type field and use newsequentialid() ) to obtain a new key ?
Gregory
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