If you use management studio, simply select the wardNo, BHTNo, testID columns and click on the key mark in the toolbar.
Command for this is,
ALTER TABLE dbo.testRequest
ADD CONSTRAINT PK_TestRequest
PRIMARY KEY (wardNo, BHTNo, TestID)
If you use management studio, simply select the wardNo, BHTNo, testID columns and click on the key mark in the toolbar.
Command for this is,
ALTER TABLE dbo.testRequest
ADD CONSTRAINT PK_TestRequest
PRIMARY KEY (wardNo, BHTNo, TestID)