SQL语句查询重复字段并按数量排序

SQL语句

描述：exhibitiononline表主键exhiid，    exhibitor表有外键 exhid，对应表 exhibitiononline的主键exhiid；

          exhibitiononline表--------->           一对多                <------------- exhibitor表 

功能：查询出 exhibitiononline表中，exhiid存在于表 exhibitor中的所有数据，并根据  exhibitor表的exhid的数量排序

select * from exhibitiononline  join 
(select exhid,count(exhid) as s from exhibitor group by exhid) as t
on exhibitiononline.exhiid=t.exhid
order by t.s desc

SQL语句查询重复字段并按数量排序,布布扣,bubuko.com

原文：http://blog.csdn.net/lican19911221/article/details/23339563