SQL语句查询重复字段并按数量排序
摘要：SQL语句描述：exhibitiononline表主键exhiid，exhibitor表有外键exhid，对应表exhibitiononli...
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】相关文章：
★ SQL语句实现SQL Server 2000及Sql Server 2005日志收缩(批量)
★ SQLSERVER中XML查询：FORXML指定AUTO
★ SQL Sever中使用SQL语句实现把重复行数据合并为一行并用逗号分隔
★ SqlServer2005中使用row_number()在一个查询中删除重复记录的方法
下一篇：
SQL注入之SQLmap入门