Elliott W (11/17/2009)
So in my view the three things you mention are already handled, could they be better, sure, but that doesn't support your position..
Oh dear! I wasn't very clear maybe. My point was that duplicate rows, type coercian and three-value logic DO all exist in SQL. They are fundamental to the way SQL works but they are three major flaws that should be got rid of. I think the problems they cause are pretty well-known and extensively covered in textbooks.