数据库SQL语句练习题5--9

6、 查询Student表中“95031”班或性别为“女”的同学记录。

select * from STUDENT t where class=‘95031‘ or ssex = ‘女‘

7、 以Class降序查询Student表的所有记录。

select * from STUDENT t order by class desc

8、 以Cno升序、Degree降序查询Score表的所有记录。

select * from SCORE t order by t.cno , t.degree desc

9、 查询“95031”班的学生人数。

select count(1) 人数 from STUDENT t where class=‘95031‘

数据库SQL语句练习题5--9

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