user_id,order_id,post_id,order_time,post_view_time,rn
1,1,2,2024-02-21,2024-02-20,1
2,3,7,2024-02-20,2024-02-20,1
3,4,13,2024-02-19,2024-02-18,1
4,6,18,2024-02-18,2024-02-18,1
1,2,4,2024-02-17,2024-02-16,1
3,5,15,2024-02-15,2024-02-14,1