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Answers and rating deltas for
Why specify primary key not null when creating a table?
| Author | Votes | Δ |
|---|---|---|
| paulsm4 | 4 | +1.84 |
| gdoron | 2 | -0.42 |
| John Woo | 1 | -0.94 |
| Val Bakhtin | 0 | -3.83 |
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