mysql 5.7.10+版本
vim /etc/mysql/my.cnf
[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
which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
原文：http://www.cnblogs.com/lovlos/p/6639874.html
