求大神帮忙写一条SQl语句
我有三个表，course课程（cid，cname，cnumber）student学生（sid，number，name）choose选课（number，cnumber）
我现在想显示所有的选课信息（按此格式cnumber，cname，name，number）
FROM course A join choose B on A.cnumber=B.cnumber join Student C on B.number=C.number
三个表联查，很简单嘛~~追问
大神能在帮一下吗，在之前的基础上在新加一个教师表teacher（tname，tnumber），在course表中存放着教师的工号tnumber，显示的时候把老师的信息也加上，会追加金币的
追答SELECT A.cnumber,A.cname,C.name,C.number,D.tnumber,D.tname
FROM course A join choose B on A.cnumber=B.cnumber join Student C on B.number=C.number
join teacher D on A.tnumber=D.tnumber
from course c,student s , choose ch
where c.cnumber = ch.cnumber, s.number = ch.number
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