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Answers and rating deltas for
Why does check against existing data not cover NULL in SQL Server 2008
| Author | Votes | Δ |
|---|---|---|
| xlecoustillier | 5 | +4.39 |
| Hamlet Hakobyan | 1 | +0.73 |
| GreyBeardedGeek | 0 | -0.93 |
| Matt | 0 | -2.73 |
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