StackRating

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

which one should i used of Union all and union when i want to eliminate the duplicate records?

Author Votes Δ
Sergey Kalinichenko 2 +0.92
Bohemian 0 -0.92
Last visited: Sep 14, 2014, 5:07:29 AM