题解 | #返回产品名称和每一项产品的总订单数#
返回产品名称和每一项产品的总订单数
https://www.nowcoder.com/practice/1c64fd9048364a58a8ffa541720359a4
select prod_name,count(order_num) orders from Products a left join OrderItems b on a.prod_id=b.prod_id group by prod_name order by prod_name
