The whole format "This is not a forum" is ill by design.
This was a very tough issue SO helped me to solve. I used a comment someone left to help me start my own research and create the code snippet I needed. I then asked someone for a indepth description on why my snippet worked and what was really going on.
While I don't use SO as much as my early coding days, I still feel it's very helpful.
http://dba.stackexchange.com/questions/151565/postgresql-gro...
I would've solved it differently (probably in Code). I'm not sure if contractors hanging around there but I had a great experience on dba exchange and got some really really helpful answers. I always tought that I should get deeper into SQL after seeing such answers.