set session sql_mode = 'ONLY_FULL_GROUP_BY'; code example
Example 1: this is incompatible with sql_mode=only_full_group_by
mysql > SET GLOBAL sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));
Example 2: mysql only_full_group_by
SET GLOBAL sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));