select a.id,a.`name` AS ‘姓名‘,b.`subject`,c.`achievement` from aaa AS a left join ccc AS c on a.id=c.uid left join bbb AS b on c.sid=b.id where a.id in(1,2,3) group by c.achievement having c.achievement>=60 order by c.achievement desc limit 3
原文：http://www.cnblogs.com/xj76149095/p/5677451.html