题解 | #从 Products 表中检索所有的产品名称以及对应的销售总数#
从 Products 表中检索所有的产品名称以及对应的销售总数
http://www.nowcoder.com/practice/2b289b78de1546f38fd24e17e56f1bec
select prod_name,sum(quantity) as quant_sold
from OrderItems
inner join Products
on Products.prod_id = OrderItems.prod_id
group by prod_name