單項選擇題查詢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


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1.單項選擇題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

2.單項選擇題查詢學(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

3.單項選擇題計算stu表中score列總分數(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

5.單項選擇題mysql中創(chuàng)建數(shù)據(jù)庫abc,以下命令正確的是()。

A.drop table abc
B.create table if exists abc
C.create database abc
D.create table abc