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| id | date | value1 | value2 |
|---|---|---|---|
| 101 | 2021-01-01 | 200 | 600 |
| 101 | 2021-01-03 | 400 | null |
| 101 | 2021-01-02 | null | 900 |
| id | date | value1 | value2 |
|---|---|---|---|
| 101 | 2021-01-01 | 200 | 600 |
| 101 | 2021-01-03 | 400 | null |
| 101 | 2021-01-02 | null | 900 |