select ifnull(c.name,'GroupBuy') source,count(*) cnt from (select *,count(*) over(partition by user_id) as cnt from order_info where date > '2025-10-15' and product_name in ('Java','C++','Python')and status = 'completed') as t left join client c on c.id = t.client_id where t.cnt>=2 group by so...