delete from people where peoplename in ( select peoplename from people group by peoplename having count(peoplename) > 1 ) and peopleid not in ( select min(peopleid) from people group by peoplename having count(peoplename) > 1 )
自己使用的时候显示报错：
1 delete from tb where id in (select max(id) from tb group by user having count(user)>1)
[err] 1093 - you can't specify target table ‘xxx’ for update in from clause
暂时不知道是什么原因导致的。
然后想办法分布操作，首先筛选出有重复user的数据，然后用max()选出其中较大的那一行：
select max(id) from tb group by user having count(user)>1
然后再根据得到的max(id)逐条删除多余的数据
1 delete from tb where id=xx
以上就是mysql删除重复数据保留最小的id的详细内容。