mysql升级Caused by: com.mysql.jdbc.exceptions clause; this is incompatible with sql_mode=only_full_gr

Posted 2022-12-08 威威dett

mysql由5.7.22升级5.7.25版本的时候报Err1055异常

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: 
Expression #1 of ORDER BY clause is not in GROUP BY clause and contains 
nonaggregated column 'callcenter.CREATETIME' which is not functionally 
dependent on columns in GROUP BY clause; this is incompatible 
with sql_mode=only_full_group_by

修复方法：

1. 首先登陆mysql

   mysql -uroot -p
   

2. 登陆后使用命令 SELECT @@sql_mode;，查看sql_mode中确实有ONLY_FULL_GROUP_BY

   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)
   
   

3. 更改mysql的sql_mode

   在/etc/my.cnf文件里加sql_mode属性，值为上一步查询出来的，去掉ONLY_FULL_GROUP_BY即可
   如下：

   # For advice on how to change settings please see
   # http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
   
   [mysqld]
   #
   # Remove leading # and set to the amount of RAM for the most important data
   # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
   # innodb_buffer_pool_size = 128M
   # =====省略一部分内容=====
   
   # Disabling symbolic-links is recommended to prevent assorted security risks
   symbolic-links=0
   
   # =============这里就是修改后的sql_mode==================
   sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'
   
   log-error=/var/log/mysqld.log
   pid-file=/var/run/mysqld/mysqld.pid
   
   

4. 重启Mysql服务就可以

   service mysql restart
   

   如果系统没有上面的重启命令
   参考地址 https://blog.csdn.net/cx136295988/article/details/76690722

提示：
网上有些办法是用如下的sql指令去修改这个值，但是每次重启后会复原，只有修改my.cnf重启才有效果。

SET sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));