select user_id from order_info where product_name in('C++','Java','Python') and date > '2025-10-15' and status = 'completed' group by user_id having count(user_id)>=2 order by user_id
select user_id from order_info where product_name in('C++','Java','Python') and date > '2025-10-15' and status = 'completed' group by user_id having count(user_id)>=2 order by user_id