I have SQL Server 2008 R2 and I want to set a unique column.
There seems to be two ways to do this: "unique index" and "unique constraint". They are not much different from what I understand, although unique constraint is recommended by most, because you also get an index automatically.
How do I create a unique constraint?
ALTER TABLE Customer ADD CONSTRAINT U_Name UNIQUE(Name)
Is there a way to create a unique constraint through the SQL Server Management Studio?