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An Elo-based rating system for Stack Overflow
                
    Answers and rating deltas for
    How to join two tables and replace null in second table with zero
| Author | Votes | Δ | 
|---|---|---|
| Gordon Linoff | 2 | +0.60 | 
| Shalev Shalit | 1 | +1.70 | 
| user8675 | 0 | -2.42 | 
| Begueradj | 0 | -0.51 | 
Last visited: Apr 28, 2015, 10:51:20 AM