How do I make a composite key with SQL Server Management Studio?

Question

How do I make a composite key with SQL Server Management Studio?

I want two INT columns to form the identity (unique) for a table

Answer 1

here is some code to do it:

-- Sample Table
create table myTable 
(
    Column1 int not null,
    Column2 int not null
)
GO

-- Add Constraint
ALTER TABLE myTable
    ADD CONSTRAINT pk_myConstraint PRIMARY KEY (Column1,Column2)
GO

I added the constraint as a separate statement because I presume your table has already been created.