I attended Kevin Feasel's SQLSaturday session entitled Apply Yourself and thought it was pretty funny. While not close friends, I have know Kevin for a while and knew he had good stuff.
He there shared this quote in his session. “If you don't understand the APPLY operator, your skills are somewhere around the 50th percentile at best.” -- Adam Machanic.
I knew immediately I wanted to have him on the show.
This episode will introduce some concepts, but you will have to do a bit a leg work if you want to start 'Applying' this into your code--I'm sorry, I couldn't resist.
As always, you can check out http://sqldatapartners.com/2015/10/13/the-apply-operator/ for the show notes. Have fun on the SQL trail!