Milage unpaid - Balances- Fuel product Project

set @startdate1 = '2019-06-01';
set @startdate2 = '2020-03-11';
use socar_malaysia;
select year(A.return_date) as year, Month(A.return_date) as month, count(distinct A.rid2) as total_resv, count(M.rid) as Paid_Excess_mileage_resv, count(N.rid) as Unpaid_Excess_mileage_resv ,
SUM(round((IFNULL(E.charges,0) - IFNULL(F.coupon_Spent,0)),2)) as Total_net_rev , Sum(M.amount) as Paid_Mileage, Sum(N.amount) as Unpaid_mileage , Round((Sum(N.amount)/Sum(M.amount))*100,2) as PCT_Unpaid
from
(select
distinct r.id as rid2, r.member_id as mid,
round(sum(timestampdiff(minute, r.start_at, r.end_at)/60),2) as dur,
round(sum(floor(timestampdiff(minute, r.start_at, r.end_at)/60/24)*12+if(mod(timestampdiff(hour, r.start_at, r.end_at),24)>=12,12,mod(timestampdiff(minute, r.start_at, r.end_at)/60,24))),2) as ad_sdur,
Date(r.return_at + interval '8' hour) as return_Date
from reservations r left join members m on r.member_id = m.id
where r.state in ('completed')
and r.return_at + interval 8 hour >= @startdate1
and r.return_at + interval 8 hour <= @startdate2
and m.imaginary in ('sofam', 'normal')
and r.member_id not in ('125', '127')
and (YEAR(r.start_at) - YEAR(m.birthday)) < 100
group by rid2) A
left join
(select c.reservation_id as rid, sum(c.amount) as charges from charges c
where c.state='normal' and c.kind in ('rent','oneway','d2d','mileage','insurance')
group by rid) E on A.rid2 = E.rid
left join
(select p.reservation_id as rid, month(p.created_at + interval '8' hour) as month,Year(p.created_at + interval '8' hour) as year, IFNULL(p.amount,0) as coupon_Spent from payments p
where p.state = 'normal' and p.paid_type = 'coupon'
group by p.reservation_id) F on A.rid2 = F.rid
left join
(select c.reservation_id as rid, sum(c.amount) as amount from charges c
where c.state='normal' and c.kind in ('mileage')
group by rid) M on A.rid2 = M.rid
left join
(select c.reservation_id as rid, sum(c.balance) as amount from charges c
where c.state= 'normal' and c.kind in ('mileage')
and c.balance > '0'
group by rid) N on A.rid2 = N.rid
group by 1,2
order by 1 asc , 2 asc