Creating composite primary key in SQL Server

Question

How to add composite primary keys in SQL Server 2008?

I have a table as follows.

testRequest (wardNo nchar(5)
            , BHTNo nchar(5)
                   


        

Answer 1

How about this:

ALTER TABLE dbo.testRequest
ADD CONSTRAINT PK_TestRequest 
PRIMARY KEY (wardNo, BHTNo, TestID)