DateDiff()

Determines the number of given date parts between two different dates

NUMERIC = DateDiff(
				
					
					
						datepart, 
					
				
					
					
						date1, 
					
				
					
					
						date2
					
				
				)

Argument	Summary
datepart	date part ('yyyy' year, 'q' quarter, 'm' month, 'y' day of year,'d' days, 'w' week day, 'ww' week of year, 'h' hours, 'n' minutes, 's' seconds, 'l' milliseconds)
date1	date1
date2	date2

Supports named-parameter calling allowing you to use the function like:

DateDiff(
   datepart=?, 
   date1=?, 
   date2=?
);

Supports passing parameters as a structure using ArgumentCollection:

DateDiff( ArgumentCollection={
   datepart : ?, 
   date1 : ?, 
   date2 : ?
} );