> I would never use constraints ever again So you'll never again use a uniqueness or foreign key constraint? Also, I don't know what pocmeans, bit it provides

> I would never use constraints ever again So you'll never again use a uniqueness or foreign key constraint? Also, I don't know what pocmeans, bit it provides no insight into the problems you had and why it was ok to accept otherwise bad data. > The fact this is presented as a reasonable (trivial!) thing to embed in the DB screams, this is a terrible place to work. Yes, a cute example showing you that you can constrain by anything is indicative of how terrible a place this is! /s