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, o.order_num from Products p left join OrderItems o on p.prod_id = o.prod_id order by p.prod_name;
MySQL中的outer join分为left join、right join、full join。内连接inner join返回的是两个表匹配的行，而外连接返回的是所有行。
