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in sqlserver, need to select one of two columns, can a case statment do this?
| Author | Votes | Δ |
|---|---|---|
| OMG Ponies | 3 | +0.42 |
| Stuart Ainsworth | 2 | +1.68 |
| J.Hendrix | 1 | -0.79 |
| SteveSmithSQL | -1 | -3.81 |
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