mysql报错Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregate

原因
聚合查询出现这样的报错是因为mysql设定的mode含有 ONLY_FULL_GROUP_BY
1
mysql> select @@sql_mode;
+-------------------------------------------------------------------------------------------------------------------------------------------+
| @@sql_mode |
+-------------------------------------------------------------------------------------------------------------------------------------------+
| ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION |
+-------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

在上面修改的基础上，本人成功的解决方法，

cd /etc/mysql/mysql.conf.d/    

（有的mysql配置文件是 /etc/my.cnf ，而我的Ubuntu16.04 + mysql 5.7.24 下 mysql配置文件是这里 /etc/mysql/mysql.conf.d/)
sudo vim mysqld.cnf
在[mysqld] 下添加：

sql_mode = STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

如果是docker

要挂载docker容器目录/etc/mysql/mysql.conf.d

把原来的目录里面的文件mysqld.cnf 的内容复制一下，在本地挂载目录粘贴，然后加上这句话

sql_mode = STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

重启mysql