At 13:50 09/06/2015, you wrote: ???? >BTW I don't remember the last time I saw SQL like this. Understanding it >might be the challenge `---
Most probably! I can imagine that you don't encounter such style in common business-like environments. Take your time, this SQL piece is clearly beyond normal human understanding. Perhaps getting in touch with the author could help. Everyone could possibly benefit of innovative views and avenues. JcD
