题解 | #牛客的课程订单分析(四)#
牛客的课程订单分析(四)
https://www.nowcoder.com/practice/c93d2079282f4943a3771ca6fd081c23
select
user_id,
min(date) first_buy_date,
count(id) cnt
from
(
select
*
from
order_info
where
date > '2025-10-15'
and status = 'completed'
and product_name in ('C++', 'Java', 'Python')
) t
group by user_id
having count(id) >= 2
order by user_id