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Answers and rating deltas for
how to exclude null values in array_agg like in string_agg using postgres?
| Author | Votes | Δ |
|---|---|---|
| Clodoaldo Neto | 5 | +1.45 |
| Dale O'Brien | 4 | 0.00 |
| rorycl | 4 | 0.00 |
| GarethD | 3 | -0.81 |
| ced-b | 1 | 0.00 |
| Michael | 0 | -3.45 |
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