GROUP BY clause is incompatible with sql_mode "only_full_group_by"
If you run into this error with MySQL:
Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'db.table.col' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
It's likely because you have the ONLY_FULL_GROUP_BY function enabled. To fix this, you have to disable it.
Run this command:
mysql > SET GLOBAL sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));
Another way to turn it off is that to find and modify the config file my.cnf. Usually it's in /etc/my.cnf or /etc/mysql/my.cnf.