mysql错误42000_mysql5.7 异常ERROR 1055 (42000)

大致错误如：ERROR 1055 (42000): Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'aaa.test.age' which is not functionally dependent on columns in GROUP BY clause;

this is incompatible with sql_mode=only_full_group_by

一般是执行类似如下语句报错：

mysql> select * from customers group by age;

解决方法：

1、登陆mysql服务器，执行以下两条命令，在global与session级都修改；

mysql> set global sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';

mysql> set session sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';

2、同时，在my.cnf文件的[mysqld]字段中，指定sql_mode的值：

[mysqld]

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

以上两种方法同时执行后，不用重启mysql

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