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 distinct prod_name,count(order_num)over(partition by p.prod_id) orders from Products p left join OrderItems o on p.prod_id=o.prod_id order by prod_name
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