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Answers and rating deltas for
Using postgres arrays in Rails 4, how do I return an array of all the unique items in the array?
| Author | Votes | Δ |
|---|---|---|
| mu is too short | 5 | +0.71 |
| nzifnab | 2 | -0.38 |
| cbass | 0 | -2.65 |
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