-- 收费单价明细
select
	amount_flag ,
	count(order_no) as order_num
from
	(
	select
		t.order_no,
		round(a.amount / 100 /(round(TIMESTAMPDIFF(second, start_time, end_time)/ 3600))) as amount_flag
	from
		luo_parking_chargerecord t
	inner join
luo_parking_chargerecord_subject a
on
		t.order_no = a.order_no
	where
		t.start_time is not null) t1
where
	t1.amount_flag between 2 and 5
group by
	1
order by
	1