>>What is the easiest way to make column unique?
>>
>>I created a unique index on the field but I really dont need the index, so the overhead of the managing the index seems excessive. Is there any other way to make a column unique? Im thinking some sort of check constraint that does a select but I get an error every time I use a query in a check constraint.
>>
>>Any ideas?
>>
>>Eric
>
>From the BOL:
>
>"SQL Server automatically creates a UNIQUE index to enforce the uniqueness requirement of the UNIQUE constraint. Therefore, if an attempt to insert a duplicate row is made, SQL Server returns an error message that says the UNIQUE constraint has been violated and does not add the row to the table. Unless a clustered index is explicitly specified, a unique, nonclustered index is created by default to enforce the UNIQUE constraint."
>
>You complain about overhead... but, whould you rather have SQL Scan the whole table each time you add/update a record to make sure the value is unique?

Very true.

When I posted this message I didnt know what I know now. I though that you could only create unique indexs, not constraints. A unique constraint is exactly what I was looking for.

Thanks for the advice though :)

Eric