Ok, fed up reading the thread. I would have failed all the interviewers just simplely in comparing the following two code pieces:

--====== A ========

Case when @i % 3 = 0 and @i % 5 = 0 then 'BizzBuzz'

when @i % 3 = 0 then 'Bizz'

when @i % 5 = 0 then 'Buzz'

else Str(@i)

End

--====== B ========

Case when @i % 5 = 0

case when @i % 3 = 0 then 'BizzBuzz' else 'Buzz' end

when @i % 3 = 0 then 'Bizz'

else Str(@i)

End

The method B will save half of the modular calculation!