RANDBETWEENReturns a uniformly random integer between two values, inclusive.
low – The low end of the random range.
high – The high end of the random range.
Values with decimal parts may be used for low and/or high; this will cause the least and greatest possible values to be the next integer greater than low and/or the next integer less than high, respectively.
RAND: Returns a random number between 0 inclusive and 1 exclusive.