Notes
How to disable ONLY_FULL_GROUP_BY mode in MySQL 5.7
$ sudo -s
# echo '[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"
' > /etc/mysql/conf.d/fullgroup.cnf
# /etc/init.d/mysql restart
# exit