The DATETIME function’s major change in SQL Server 2008 is the four DATETIME data types introduced. They are DATE, TIME, DATETIMEOFFSET and DATETIME2. IN addition to these newly introduced data types, there are new DATETIME functions all well.
TIME Datatype
DECLARE @dt as DATE
SET @dt = getdate()
SELECT @dt
23:48:04.0570000
The range for the DATE datatype is from 00:00:00.0000000 through 23:59:59.9999999..
DATETIME2 Data Type
DECLARE @dt7 datetime2(7)
SET @dt7 = Getdate()
SELECT @dt7
2007-10-28 22:11:19.7030000
for above example, (7) is the Fraction
Fraction Output
0 2007-10-28 22:11:20
1 2007-10-28 22:11:19.7
2 2007-10-28 22:11:19.70
3 2007-10-28 22:11:19.703
4 2007-10-28 22:11:19.7030
5 2007-10-28 22:11:19.70300
6 2007-10-28 22:11:19.703000
7 2007-10-28 22:11:19.7030000
