题解 | #确定哪些订单购买了
确定哪些订单购买了 prod_id 为 BR01 的产品（二）
https://www.nowcoder.com/practice/999aa31a9a504c60baa088d90d82e64d
select o.cust_id,o.order_date from (select * from Orders)o, (select * from OrderItems where prod_id = 'BR01') os where os.order_num=o.order_num order by o.order_date
