Cybermedium attitude

SELECT users.* FROM yacs_members AS members INNER JOIN yacs_users AS users WHERE (members.anchor LIKE 'category:81') AND (members.member_type LIKE 'user') AND (users.id = members.member_id) AND (users.active='Y') AND (users.capability IN ('S', 'M', 'A')) GROUP BY users.id ORDER BY users.full_name, users.nick_name LIMIT 0,100
1055: 'qgem6871_cyb.users.active' isn't in GROUP BY