sql

题目：table有两个字段，分别是student,score , 挑选不及格20名，及格30名学生

代码：

select bujige.student,bujige.score,jige.student,jige.score
from (select * from table order by table.score limit 20) bujige,
	 (select * from table order by table.score desc limit 30) jige

参考链接：https://www.cnblogs.com/cjsblog/p/10874938.html