题解 | #订单购买了 prod_id 为 BR01 的产品
确定哪些订单购买了 prod_id 为 BR01 的产品（一）
https://www.nowcoder.com/practice/b692b0174c0444fa9452aee2d082fbbb
SELECT DISTINCT cust_id,order_date
FROM Orders
WHERE order_num IN (
SELECT order_num
FROM OrderItems
WHERE prod_id = 'BR01'
)
order by order_date
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