题解 | #牛客的课程订单分析(三)#

select id,t1.user_id user_id,product_name,status,client_id,date
from (select id,user_id,product_name,status,client_id,date
from order_info
where date>"2025-10-15" and status='completed' and product_name in ('C++','Python','Java')) t1
left join
(select user_id,count(user_id) c
from order_info
where date>"2025-10-15" and status='completed' and product_name in ('C++','Python','Java')
group by user_id
having count(user_id)>=2) t2
on t1.user_id=t2.user_id
where c>=2