select user_id,min(date) first_buy_date,count(user_id) cnt
from order_info
where date > '2025-10-15'
and product_name in ('C++','Java','Python')
and status = 'completed'
group by user_id
having count(user_id) > 1
order by user_id
select user_id,min(date) first_buy_date,count(user_id) cnt
from order_info
where date > '2025-10-15'
and product_name in ('C++','Java','Python')
and status = 'completed'
group by user_id
having count(user_id) > 1
order by user_id
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