SQL Server gets two date time difference

1 SELECT DateDiff(YY,'2010-06-1 10:10',GETDATE())--calculate how many years2 SELECT DateDiff(Q,'2011-01-1 10:10',GETDATE())--Calculate how many quarters 3 months a quarter3 SELECT DateDiff(MM,'2011-06-1 10:10',GETDATE())--calculate how many months4 SELECT DateDiff(DD,'2011-06-1 10:10',GETDATE())--calculate how many days5 SELECT DateDiff(WK,'2011-06-1 10:10',GETDATE())--calculate how many weeks6 SELECT DateDiff(HH,'2011-06-10 10:10','2011-06-10 11:10')--calculate how many hours7 SELECT DateDiff(N,'2011-06-10 10:10','2011-06-10 10:11')--calculate how many minutes8 SELECT DateDiff(SS,'2011-06-10 10:10:00','2011-06-10 10:10:10')--calculate how many seconds9 SELECT DateDiff(MS,'2011-06-16 10:10:10','2011-06-16 10:10:11')--calculate how many milliseconds

SQL Server gets two date time difference