Some of my favourite answers on Stackoverflow Learning wise:

1.http://stackoverflow.com/questions/38414180/difference-in-number-of-logical-reads-for-similar-set-of-data/38414674#38414674
2.http://stackoverflow.com/questions/37771522/optimizing-indices-for-ranking-in-sql-server/37771935#37771935
3.http://stackoverflow.com/questions/38353213/exclude-functions-from-where-clause-in-sql-server/38353366#38353366

Check out my other answers:

http://stackoverflow.com/users/2975396/thegameiswar?tab=answers