How to control order of assignment for new identity column in SQL Server?

Posted by alpav on Stack Overflow See other posts from Stack Overflow or by alpav
Published on 2010-03-15T19:56:35Z Indexed on 2010/03/15 20:09 UTC
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Filed under:

sql

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sql-server-2005

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Identity

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order

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sql-server

I have a table with CreateDate datetime field default(getdate()) that does not have any identity column.

I would like to add identity(1,1) field that would reflect same order of existing records as CreateDate field (order by would give same results). How can I do that ?

I guess if I create clustered key on CreateDate field and then add identity column it will work (not sure if it's guaranteed), is there a good/better way ?

I am interested in SQL Server 2005, but I guess the answer will be the same for SQL Server 2008, SQL Server 2000.

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