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| purchaseDate | customerID | salesUnit |
|---|---|---|
| 2018-01-01 | 1 | 10 |
| 2018-01-02 | 1 | 5 |
| 2018-01-05 | 2 | 3 |
| 2018-01-15 | 1 | 10 |
| 2018-01-20 | 2 | 4 |
| purchaseDate | CustomerID | SalesUnit | SalesLast7 | SalesLast14 |
|---|---|---|---|---|
| 2018-01-01 | 1 | 10 | 10 | 10 |
| 2018-01-02 | 1 | 5 | 15 | 15 |
| 2018-01-05 | 2 | 3 | 3 | 3 |
| 2018-01-15 | 1 | 10 | 10 | 15 |
| 2018-01-20 | 2 | 4 | 4 | 4 |
Warning: Null value is eliminated by an aggregate or other SET operation.