mysql之删除重复数据

//删除id重复的数据，适合id是手工主键
delete person as a from person as a,
(
    select *,min(id) from person group by id having count(1) > 1
) as b
where a.id = b.id

                  

//查找name重复的，并且除掉id最小的那个

delete tb_person as a from tb_person as a,
(
select *,min(id) from tb_person  group by name having count(1) > 1
) as b
 where a.name = b.name and a.id > b.id;