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 a right join Orders b on a.order_num = b.order_num
group by cust_id
order by sum(item_price*quantity) DESC

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