题解 | 查询出每个品牌在不同月份的总销售额以及购买该品牌商品的用户的平均年龄
查询出每个品牌在不同月份的总销售额以及购买该品牌商品的用户的平均年龄
https://www.nowcoder.com/practice/a50c67d3374f4d0e85869d3e48e02c0a
with od as( select o.order_id,category_id ,order_amount,order_date,customer_gender from order_details o left join customer_info c on o.order_id = c.order_id where order_date between '2024-01-01' and '2024-06-30' ) select od.category_id , sum(order_amount) total_sales , sum(if(customer_gender='男',1,0)) male_customers , sum(if(customer_gender='女',1,0)) female_customers from od group by 1