I don't know a better way to explain it than that.
Well Mark, I in turn cannot understand why people do not seem to grasp
the very fundemental concept of what a null is and what a value is. I
do agree that dealing with NULLs in Oracle using state operators is
not ideal as its easier to deal with NULLs using math operators (and
in most other languages). But I do not agree with the misconception
that an empty string is somehow different from a NULL string.
