| transaction_id | customer_id | transaction_date | amount | | -------------- | ----------- | ---------------- | ------ | | 1 | 101 | 2023-05-01 | 100 | | 2 | 101 | 2023-05-02 | 150 | | 3 | 101 | 2023-05-03 | 200 | | 4 | 102 | 2023-05-01 | 50 | | 5 | 102 | 2023-05-03 | 100 | | 6 | 102 | 2023-05-04 | 200 | | 7 | 105 | 2023-05-01 | 100 | | 8 | 105 | 2023-05-02 | 150 | | 9 | 105 | 2023-05-03 | 200 | | 10 | 105 | 2023-05-04 | 300 | | 11 | 105 | 2023-05-12 | 250 | | 12 | 105 | 2023-05-13 | 260 | | 13 | 105 | 2023-05-14 | 270 |