mysql 去掉重复数据

DELETE from 表明 where id not in(
select a.id from
(
    SELECT
    id
    FROM 表明 GROUP BY 字段

)a

)

 

MySQL5.7版本sql_mode=only_full_group_by问题解决办法

SET sql_mode =\'STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION\';

https://blog.csdn.net/weixin_43064185/article/details/99646535