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 join(

select order_num,sum(item_price*quantity) as total_ordered
from OrderItems
group by order_num
order by total_ordered desc) as oo
using (order_num)
order by total_ordered desc

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