SQL简单查询-2

12、查询“计算机系”与“电子工程系” 中不同职称的教师tname和prof

select tname,prof from teacher a where prof not in(select prof from teacher b where a.depart!=b.depart)

13、查询和学号为107的同学同年出生的所有学生的Sno、Sname和Sbirthday列

select sno,sname,sbirthday  from student where  year(sbirthday) =(select year(sbirthday) from student where sno='107')

14、查询出“计算机系“教师所教课程的成绩表

select score.sno,score.cno,score.degree from teacher 

inner join course on teacher.tno = course.tno

inner join score on course.cno = score.cno

where teacher.depart = '计算机系'

或者：

select sno,Cno ,Degree from Score where Cno in (select Cno from Course where Tno in (select tno from Teacher where Depart='计算机系'))