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Answers and rating deltas for
Rails 3.1 with PostgreSQL: GROUP BY must be used in an aggregate function
| Author | Votes | Δ |
|---|---|---|
| rubish | 3 | +3.97 |
| John Beynon | 2 | +0.08 |
| Ilake Chang | 1 | 0.00 |
| ipr101 | 0 | -3.98 |
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