题解 | #返回每个顾客不同订单的总金额#
返回每个顾客不同订单的总金额
https://www.nowcoder.com/practice/ce313253a81c4947b20e801cd4da7894
select cust_id,total_ordered
from Orders a ,
( select order_num,
sum(item_price*quantity) as total_ordered
from OrderItems
group by order_num)as b
where a.order_num=b.order_num
order by b.total_ordered desc
from Orders a ,
( select order_num,
sum(item_price*quantity) as total_ordered
from OrderItems
group by order_num)as b
where a.order_num=b.order_num
order by b.total_ordered desc
