StackRating
An Elo-based rating system for Stack Overflow
                
    Answers and rating deltas for
    Mysql how to group by multiple columns, and select a flag value based on which group matched
| Author | Votes | Δ | 
|---|---|---|
| Chandana Kumara | 0 | 0.00 | 
Last visited: Jan 9, 2017, 5:43:38 AM