MYSQL 分组报错1055 - Expression #1 of SELECT list is not in GROUP BY...

MYSQL 分组报错：

1055 - Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'testdb.salary.pay_date' 
which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

解决方案：
执行以下语句，将only_full_group_by模式关闭

set sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';