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Answers and rating deltas for
How can I group records and do calculations between first and last records in each group using Oracl
| Author | Votes | Δ |
|---|---|---|
| Tim Williams | 2 | +1.55 |
| Arkadiusz Łukasiewicz | 0 | -0.40 |
| sagi | 0 | -1.16 |
Last visited: Aug 26, 2016, 2:34:25 PM