StackRating

An Elo-based rating system for Stack Overflow
Home   |   About   |   Stats and Analysis   |   Get a Badge
Answers and rating deltas for

SQL: Unique constraint when column is a certain value

Author Votes Δ
RThomas 5 +0.47
Houari 1 -3.75
Last visited: Sep 14, 2014, 5:07:29 AM