UNIQUE Constraint

Aug 16, 2006

i'm just creating a table, no data as yet.

i have a varchar(15) fld with Nulls NOT allowed

i want to create a constraint that this field named ipkey be UNIQUE.

I'm having trouble with the syntax for the constraint expression.

i've typed in the SQL Server Managment Studio Express Expression field:
UNIQUE(ipkey)
and
@unq_ipkey UNIQUE(ipkey)

SQL Server Managment Studio Express complains:
"Error validating constrating, do you want to edit expression"

So - what am i doing wrong?
And thanks for taking the time to help.

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Hi,

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Here is the table I created:

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