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| Person | Location | Average | rn | (No column name) |
|---|---|---|---|---|
| A | X | 30000 | 1 | 45000 |
| D | Z | 30000 | 2 | 45000 |
| B | Y | 40000 | 1 | 45000 |
| C | X | 50000 | 1 | 45000 |
| E | Y | 60000 | 1 | 45000 |
Warning: Null value is eliminated by an aggregate or other SET operation.