問題詳情

【題組】 ⑵ select item_id from ordersgroup by item_idhaving 10*sum(quantity)>(select on_hand from stock where orders.item_id =stock.item_id);

參考答案

答案：D
難度：非常簡單0.917683
統計：A(13),B(1),C(3),D(301),E(0)