题解 | 查询出每个品牌在特定时间段内的退货率以及平均客户满意度评分
查询出每个品牌在特定时间段内的退货率以及平均客户满意度评分
https://www.nowcoder.com/practice/39f4ccb8ac1b47a89d092b4d8ed08bc8
select brand_id ,brand_name ,round(sum(return_status)/count(*),2) as return_rate_July_2024 ,round(avg(customer_satisfaction_score),2) as average_customer_satisfaction_score from sales_orders join brand_info using(brand_id) join customer_feedback using(order_id) where order_date between '2024-07-01' and '2024-07-31' group by brand_id,brand_name order by brand_id
