單項(xiàng)選擇題在SQL語句中,可以使用()子句設(shè)置查詢條件,如查詢年齡大于30的數(shù)據(jù)。

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


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1.單項(xiàng)選擇題以下能查詢student表中age字段的最小值的SQL語句是()。

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

2.單項(xiàng)選擇題計(jì)算stu表中score列平均分?jǐn)?shù)的sql語句正確的是()。

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

3.單項(xiàng)選擇題查詢student表中name一列數(shù)據(jù),以下命令正確的是()。

A.select * from student
B.select name from student
C.delete from student
D.update name from student

4.單項(xiàng)選擇題mysql查詢數(shù)據(jù)內(nèi)容命令正確的是()。

A.select * from class
B.drop * from class
C.modify * from class
D.change * from class

5.單項(xiàng)選擇題查詢學(xué)生表中的學(xué)生信息,按照姓名降序排列()。

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