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15 rows affected
| Item | Date | GroupNum | Count |
|---|---|---|---|
| A | 2019-01-01 | 1 | 1 |
| B | 2019-01-02 | 1 | 2 |
| C | 2019-01-03 | 1 | 3 |
| D | 2019-01-04 | 1 | 4 |
| A | 2019-01-05 | 2 | 1 |
| B | 2019-01-06 | 2 | 2 |
| A | 2019-01-07 | 3 | 1 |
| B | 2019-01-08 | 3 | 2 |
| C | 2019-01-09 | 3 | 3 |
| D | 2019-01-10 | 3 | 4 |
| E | 2019-01-11 | 3 | 5 |
| A | 2019-01-12 | 4 | 1 |
| A | 2019-01-13 | 5 | 1 |
| A | 2019-01-14 | 6 | 1 |
| B | 2019-01-15 | 6 | 2 |
Warning: Null value is eliminated by an aggregate or other SET operation.