DateRange

hi Experts,

                     Could you Please help me on this query..

I have @startdate ='2012-01-01 00:00:00.000',   @Enddate = '2014-01-31 00:00:00.000'

in the table i have dateranges define if the startdate and endate falls in the selected daterange of values in table then i should get the values of the table .

OUTPUT

2012-01-01 00:00:00.0002012-12-31 23:59:59.000
2013-01-01 00:00:00.000 2013-12-31 23:59:59.000
2014-01-01 00:00:00.000 2014-01-20 23:59:59.000
2014-01-21 00:00:00.000 2014-12-31 23:59:59.000

If @startdate ='2014-01-01 00:00:00.000',   @Enddate = '2014-01-31 00:00:00.000' then 

OUTPUT

2014-01-01 00:00:00.000 2014-01-20 23:59:59.000
2014-01-21 00:00:00.000 2014-12-31 23:59:59.000

 DECLARE @TABLE TABLE(DateFrom DATETIME, DateTo DATETIME)

INSERT INTO @TABLE
SELECT '2012-01-01 00:00:00.000','2012-12-31 23:59:59.000' UNION ALL 
SELECT '2013-01-01 00:00:00.000','2013-12-31 23:59:59.000' UNION ALL 
SELECT '2014-01-01 00:00:00.000','2014-01-20 23:59:59.000' UNION ALL 
SELECT '2014-01-21 00:00:00.000','2014-12-31 23:59:59.000'
SELECT * from @TABLE