■ SELECT米 fRoM Course WHERE COuNC=002 seleCt from Course WHERE CouN=003 测试 UV: UPDATE StuCou SET CouNo=002 WHERE tuNo=00000011 AND CouN=003 SELECT * FROM Course WHERE COuNo=002 ■ SELECT米 FROM Course WHERE COUNo=0032SELECT * FROM Course WHERE CouNo='002' SELECT * FROM Course WHERE CouNo='003' 测试：UPDATE StuCou SET CouNo='002' WHERE StuNo='00000011' AND CouNo='003' SELECT * FROM Course WHERE CouNo='002' SELECT * FROM Course WHERE CouNo='003