Как исправить запрос к БД MySQL?

SELECT NULL, u.id, u.user_login, ((SUM(r.amount)+io.amount_value)*0.28), ((sum(r.amount)+io.amount_value)*0.28+SUM(r.amount)+io.amount_value), 'RUB', (DATE(ul.expire_time) - CURDATE()), start_time, now(), ul.expire_time, 'no' 
FROM ihc_orders io  
JOIN users u ON io.uid = u.id 
JOIN uap_affiliates ua ON io.uid = ua.uid 
JOIN uap_referrals r ON ua.id = r.affiliate_id 
JOIN ihc_user_levels ul ON ul.user_id = u.id 
WHERE io.status='Completed' AND r.status ='2' AND ul.status='1' 
GROUP BY io.uid