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How can I get the difference of two dates from different tables and generate it as a summary usin...
| Author | Votes | Δ |
|---|---|---|
| Z.D. | 2 | +2.17 |
| Juan Filipe | 1 | 0.00 |
| Sebastian Meine | 1 | -2.17 |
Last visited: Sep 14, 2014, 5:07:29 AM