Is "like that" how, exactly?Missing my original point here. The set theory is the _point_. SQL is a gargantuan distraction from using it efficiently.
Imagine if COBOL was the only widely-available programming language with functions. You might use it, because functions are really great abstraction for programming. That wouldn’t mean that COBOL wasn’t an utterly awful language.
SQL is like that, only for relations, sets and logic.
