I accidentally enabled ONLY_FULL_GROUP_BY mode like this:
SET sql_mode = 'ONLY_FULL_GROUP_BY';
How do I disable it?
Solution 1: Remove ONLY_FULL_GROUP_BY from mysql console
mysql > SET GLOBAL sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));
you can read more here
Solution 2: Remove ONLY_FULL_GROUP_BY from phpmyadmin