mysql報錯：Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggre

原因：

　　https://blog.csdn.net/fansili/article/details/78664267

解決辦法：

　　1：查看mysql配置文件位置

[root@localhost ~]# ps -ef | grep mysql
mysql      838     1  0 02:21 ?        00:00:00 /usr/sbin/mysqld --defaults-file=/etc/my.cnf
root      2035  1706  0 02:29 pts/0    00:00:00 grep --color=auto mysql

　　2：打開配置文件

[root@localhost ~]# vim /etc/my.cnf

　　3：修改配置：如果沒有該配置項，添加一個即可

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

　　4：重啟mysql

[root@localhost ~]# systemctl restart mysql