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| cust_id | Product_id | time_since_last_diff_order_days |
|---|---|---|
| 1 | a | 34 |
| 2 | b | 92 |
| 3 | c | 93 |
| 4 | d | 117 |
| cust_id | Product_id | time_since_last_diff_order_days |
|---|---|---|
| 1 | a | 34 |
| 2 | b | 92 |
| 3 | c | 93 |
| 4 | d | 117 |