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 o.cust_id cust_id,sum(oi.item_price*oi.quantity) total_ordered from Orders o left join OrderItems oi on o.order_num = oi.order_num group by o.cust_id order by total_ordered desc;
