"SQLSTATE[42000]: Syntax error or access violation: 1055 Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'dashd-ardaconfce.event_table.sdate' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by (SQL: select `month` from `event_table` where `index_id` like %13% and `country` like %% group by `month` order by `sdate` asc)"