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,sum(item_price*quantity) total_ordered
from OrderItems,Orders
where OrderItems.order_num=Orders.order_num
group by OrderItems.order_num,cust_id
order by total_ordered desc;
from OrderItems,Orders
where OrderItems.order_num=Orders.order_num
group by OrderItems.order_num,cust_id
order by total_ordered desc;
