The kind of exams where students must select answers are ______.
A.personal
B.spoken
C.objective
D.written
A.SELECT up_studentInfo;
B.CALL proc up_studentInfo();
C.CALL up_studentInfo;
D.SELECT up_studentInfo();
SQL语句: SELECT*FROM仓库表WHERE NOT EXISTS; (SELECT*FROM职工表WHERE仓库号=仓库.仓库号) 该语句等价于: SELECT*FROM仓库表WHERE仓库号 (SELECT仓库号FROM职工表)