| order_id | product_id | quantity | | -------- | ---------- | -------- | | 1 | 1 | 12 | | 1 | 2 | 10 | | 1 | 3 | 15 | | 2 | 1 | 8 | | 2 | 4 | 4 | | 2 | 5 | 6 | | 3 | 3 | 5 | | 3 | 4 | 18 | | 4 | 5 | 2 | | 4 | 6 | 8 | | 5 | 7 | 9 | | 5 | 8 | 9 | | 3 | 9 | 20 | | 2 | 9 | 4 |