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A.drop table Stu
B.drop Stu
C.drop Stu table
D.drop table if exists Stu

A.表達(dá)式
B.邏輯關(guān)系值
C.表
D.數(shù)據(jù)庫

A.drop database wg
B.drop wg
C.drop wg databases
D.drop database if exists wg

A.service mysqld start
B.chkconfig mysqld on
C./etc/init.d/mysqld start
D.service mysqld stop

A.max（）
B.min（）
C.sum（）
D.avg（）

A.select * from student order by name desc
B.select * from student order by name asc
C.select * from student group by name desc
D.select * from student group by name

A.add
B.change
C.modify
D.drop

A.where
B.group by
C.ather
D.limits

A.select max（age）from student
B.select min（age）from student
C.select sum（age）from student
D.select avg（age）from student

A.select avg（score）from stu
B.select max（score）from stu
C.select min（score）from stu
D.select sum（score）from stu