StackRating

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

Why does only one of these SQL statements work?

Author Votes Δ
John Woo 5 +0.28
cardmagik 0 -2.23
Last visited: Sep 14, 2014, 5:07:29 AM