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Constraint on 2 fields
Message
Information générale
Forum:
Microsoft SQL Server
Catégorie:
Syntaxe SQL
Versions des environnements
SQL Server:
SQL Server 2000
Divers
Thread ID:
01096008
Message ID:
01096128
Vues:
12
Thanks
>
>ALTER TABLE dbo.MyTable WITH NOCHECK ADD
> CONSTRAINT [ConstraintName] UNIQUE NONCLUSTERED
> (Column1, Column2) ON [PRIMARY]
>GO
>

>
>Cheers,
>
>Zoran
>
>>Consider the following table structure:
>>Id uniqueidentifier
>>ControlId bigint
>>Number tinyint
>>field_0 varchar(10)
>>field_1 varchar(10)
>>.
>>.
>>field_n varchar(10)
>>
>>The Id field is my PK, but I would also like to add a unique constraint on the "combination" of the fields ControlId and Number. How can I do this? Please let me know if what I am asking is very unclear.
>>
>>Thanks,
>>Einar
Semper ubi sub ubi.
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