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4 rows affected
| a | b | c | a1 | b1 | c1 |
|---|---|---|---|---|---|
| 2021-01-01 | 0.1 | 1 | 2021-01-01 | 0.1 | null |
| 2021-01-02 | 0.1 | 0 | 2021-01-04 | 0.1 | 2021-01-02 |
| 2021-01-03 | 0.5 | 0 | 2021-01-04 | 0.5 | 2021-01-03 |
| 2021-01-04 | 0.3 | 1 | 2021-01-04 | 0.3 | null |
Warning: Null value is eliminated by an aggregate or other SET operation.