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| day | rolling_avg |
|---|---|
| 1 | 3.0000000000000000 |
| 2 | 4.0000000000000000 |
| 3 | 3.2222222222222222 |
SELECT 3
| day | rolling_avg |
|---|---|
| 1 | 3.0000000000000000 |
| 2 | 4.0000000000000000 |
| 3 | 3.2222222222222222 |
SELECT 3