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
with t as( select order_num,sum(item_price*quantity)'total_order' from OrderItems group by order_num ) select o.cust_id,t.total_order from Orders o left join t on o.order_num=t.order_num order by t.total_order desc;
