thatday

摘要： 1 select Sno,Sname from Student where Ssex='女'and Sage>25; 2 --查询选修了“数据库”课程的学生姓名。 3 select Sname from Student where Sno in(select Sno from SC where Cno in(select Cno 4 from Course where Cname='数据库')); 5 6 select Sname from Student,Course,SC Where 7 Student.Sno=SC.Sno and Course.Cn 阅读全文