Error Number: 1055
Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'websouth_prafullaweb.achievement_gallery.file_url' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
select achievement.id, achievement.achievement, achievement_gallery.file_url from achievement INNER JOIN achievement_gallery on achievement.id = achievement_gallery.achievement_id where achievement.status = '1' GROUP BY achievement_gallery.achievement_id
Filename: models/AchievementModel.php
Line Number: 20