题解 | #返回产品名称和与之相关的订单号#
返回产品名称和与之相关的订单号
https://www.nowcoder.com/practice/c369a759436a4e8b80baa9c39e9adf18
select p.prod_name,oi.order_num from Products p left join OrderItems oi on p.prod_id=oi.prod_id order by p.prod_name; /*修订后 (select prod_name,order_num from Products p left join OrderItems o on p.prod_id=o.prod_id) union (select prod_name,order_num from Products p right join OrderItems o on p.prod_id=o.prod_id) order by prod_name; */
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