Total Bookings - Coupon Rates (Charges+payments)

select

A.memberid,
A.day,
A.ridelength ,
A.ridelengthinminutes,
A.startingday,
A.startingtime,
B.regionname,
B.carname,
A.rid,
A.carid,
B.zoneid,
A.state,
IFNULL(ma.recommender,"") as referral,
IFNULL(coupons.comment,"") as coupon,
IFNULL(round(c.rev,2),0) as rev,
round((IFNULL(c.rev,0) - IFNULL(p.coupon,0)),2) as net_rev,
round(IFNULL((IFNULL(p.coupon,0)/c.rev),0),2) as coupon_rate


from (select
distinct m.id as memberid,
date(r.occupy_start_at + interval '8' hour) as day,
timestampdiff(minute,CONVERT_TZ(r.start_at, '+00:00', '+8:00'), CONVERT_TZ(r.end_at, '+00:00', '+8:00'))/60 as ridelength,
TIMESTAMPDIFF(minute,CONVERT_TZ(r.start_at, '+00:00', '+8:00'), CONVERT_TZ(r.end_at, '+00:00', '+8:00')) as ridelengthinminutes,
weekday(r.occupy_start_at + interval '8' hour) as startingday,
hour(r.occupy_start_at + interval '8' hour) as startingtime,
r.id as rid,
r.state as state,
r.car_id as carid
from members m

left outer join reservations r on m.id = r.member_id

where CONVERT_TZ(r.start_at, '+00:00', '+8:00') >= '2019-1-1 00:00'
and CONVERT_TZ(r.start_at, '+00:00', '+8:00') < '2019-9-1'
and m.imaginary = 'normal'
and m.state = 'normal'
and r.state IN ('completed','inuse','reserved')

group by m.id,r.id
) A

left outer join

(select
c.id as carid,cc.car_name as carname,z.region as regionname,z.id as zoneid from cars c
left outer join car_classes cc  on cc.id = c.car_class_id
left outer join zones z on z.id = c.zone_id
left outer join car_zone_logs as cz on c.id = cz.car_id
where cz.car_state = 'Normal'
#and z.state = 'normal'
group by c.id) B
on A.carid = B.carid

left join (
        select IFNULL(payments.amount,0) as coupon, payments.reservation_id as rid
        from payments
        where payments.state = 'normal' and payments.paid_type = 'coupon'
    ) as p on p.rid = A.rid
left join (
        select sum(charges.amount) as rev, charges.reservation_id as rid
        from charges
        where charges.state = 'normal' and charges.kind IN ('rent' , 'oneway', 'd2d', 'mileage')
        group by charges.reservation_id
   ) as c ON A.rid = c.rid

left join coupons on coupons.reservation_id = A.rid
left join member_appendixes ma on A.memberid = ma.member_id

group by A.memberid,B.carid,A.rid

order by c.rev desc