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Answers and rating deltas for
What is the most efficient way to UPDATE existing rows and INSERT non-exist rows in a table-copy ...
| Author | Votes | Δ |
|---|---|---|
| Ganesh Bora | 1 | +2.91 |
| Vince Pergolizzi | 1 | +3.34 |
| JHS | 0 | -2.02 |
| Addicted | 0 | -1.91 |
| flowfree | 0 | -2.33 |
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