题解 | 确定哪些订单购买了 prod_id 为 BR01 的产品(一)
select cust_id,order_date from Orders where order_num in ( select order_num from OrderItems where prod_id='BR01' )
select cust_id,order_date from Orders where order_num in ( select order_num from OrderItems where prod_id='BR01' )
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