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) as orders
from
Products left outer join OrderItems
on Products.prod_id = OrderItems.prod_id
group by
prod_name
order by
prod_name
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