[Err] 1055 - Expression ---mysql

[Err] 1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'information_schema.PROFILING.SEQ' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

  解决MySQL报错：[Err] 1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'informat

一、问题描述
新安装的MySQL5.7.22 或 8.0.11，在 Navicat 上执行删除操作时，遇到报错：
[Err] 1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'information_schema.PROFILING.SEQ' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with
sql_mode=only_full_group_by


二、问题解决
1、 解决办法： 把 sql_mode中的 only_full_group_by 去掉即可。
2、 办法一 （摘自 这里 只在当前查询页面有效，不能一次性解决问题！）：
select version(), @@sql_mode;
SET sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));

3、办法二： 修改 my.cnf 文件的 sql_mode （一次性解决问题）
查找 my.cnf 文件： find / -name my.cnf 或者 whereis my.cnf
获取 sql_mode字段内容： SELECT @@sql_mode;
去掉 sql_mode字段中的 only_full_group_by
编辑 my.cnf： vim /etc/my.cnf 将上一步骤的 sql_mode 字段内容添加至 my.cnf
保存，重启： service mysqld restart
sql_mode 字段参考：
sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION