题解 | 返回购买价格为 10 美元或以上产品的顾客列表
SELECT cust_id
FROM Orders
WHERE order_num IN ( SELECT order_num
FROM OrderItems
WHERE item_price>=10);
IN括号里面不需;
SELECT cust_id
FROM Orders
WHERE order_num IN ( SELECT order_num
FROM OrderItems
WHERE item_price>=10);
IN括号里面不需;
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