Mysql 删除重复记录，只保留最小的一条

delete from `jb_postcontent` where id not in(select min(id) from (select * from `jb_postcontent`) as t group by t.id);

网上搜索的大部分都是如下这样

delete from people   
where peopleId in (select peopleId from people group by peopleId   having count(peopleId) > 1)   
and rowid not in (select min(rowid) from people group by peopleId having count(peopleId )>1)   

结果你会发现，mysql报错，因为不能更新用于子查询里面的表。