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