你这里没判念码有提供字段.!暂时掘哪用中文代替了.
1.create view VI_Student
as
select * from student where 班级名='01数据库';
2.creaet view V_CourseSub
as
select 课程名称,学分 from Course where
报名人数>30;
3.create view V_Stucou
as
select count(选课的高首Id) from 表名;
4.--忘记怎么加密去了.!
5.drop view V_Stucou;
10分???