As I started some weeks ago playing with the excellent Sql Challenges of Jacob Sebastian ( challenge #1 , challenge #2 & challenge #3 ) , I thought it was really good exercise. It is a good way to find elegant solutions to common problems and a really interesting and funny way to learn sql. That...

A lot of (good) answers to the third challenge, just as diverse and interesting. Congratulations to Nicolas, Arnaud, and Joel who are the winners for this challenge and who submit the most interesting solutions. Remember you will find details of the challenge here   This challenge can be resolved...