一个表中多个字段同一个外键查询问题

[wyman25]

学生表student（stu_id,stu_name），班级表class(monitor_id,vince_monitor_id) monitor_id为正班长学号,vince_monitor_id为副班长学号，而且monitor_id为student外键，vince_monitor_id也为student外键
用一条SQL查询语句，怎样查出一个班上正班长姓名和副班长姓名？

[sdhdy]

select 正班长姓名=b.stu_name,副班长姓名=c.stu_name 
from class a
left join student b on a.monitor_id=b.stu_id
left join student c on a.vince_monitor_id=c.stu_id

[cngothic]

select * from student as s left jion class as c on s.stu_id = c.monitor_id or s.stu_id = vince_monitor_id

[-狙击手-]

select a.stu_name ,b.stu_name
from class c
left join student a on a.stu_id = c.monitor_id
left join student b on b.stu_id = c.vince_nonitor_id

[feixianxxx]

select 
正班长姓名=b.stu_name,
副班长姓名=c.stu_name 
from class a
 join student b on a.monitor_id=b.stu_id
 join student c on a.vince_monitor_id=c.stu_id

[华夏小卒]

select [id]=monitor_id,stu_name from student s,class c where c.monitor_id=s.stu_id
union all
select [id]=vince_monitor_id,stu_name from student s,class c where c.vince_monitor_id=s.stu_id

[--小F--]

select 
   正班长姓名=b.stu_name,
   副班长姓名=c.stu_name 
from 
   class a,student b ,student c 
where 
   a.monitor_id=b.stu_id 
and 
   a.vince_monitor_id=c.stu_id