Hugo Kornelis (10/28/2010)
I must say that I am also very surprised (and disappointed) by the amount of incorrect answers. Almost 25% of respondents expect NULL to be returned as well - much more that I expected, because this is far from the first time that the effects of NULL in comparisons have been tested in the QotD.
Looking on the bright side it means that 25% of responders will have learnt something today. That's what this site is about as well. I suppose I get about half of the questions wrong, mainly on topics that I have never had to deal with as part of my work.