Te paso un ejemplo:
CREATE TABLE [dbo].[uniqueid](
[Cod] [int] NOT NULL,
[c2] [uniqueidentifier] NOT NULL CONSTRAINT [DF_uniqueid_c2] DEFAULT
(newid())
) ON [PRIMARY]
insert into uniqueid values(1, newid())
insert into uniqueid(cod) values(1)
select * from uniqueid
--
Un saludo
Salvador Ramos
Murcia - España
------------------------------------------------
[Microsoft MVP SQL Server / MCTS: SQL Server 2005]
www.helpdna.net (información sobre SQL Server y .NET)
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