That column is the tIME STAMP (date and time) that a sample of a reading have been taken. I just genertaed insert statement for the first few rows because that table contains thousand of rows! the values are differents in other rows for the TimeStamp_ID Also as i said, i also found a scalar function part of the database wich is as follow:

/****** Object: UserDefinedFunction [dbo].[udfTicksToDateTime] Script Date: 07/30/2013 11:43:35 ******/

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

ALTER FUNCTION [dbo].[udfTicksToDateTime]

(

@Ticks BIGINT

)

RETURNS DATETIME AS

BEGIN

DECLARE @DaysBIGINT

DECLARE @DaysBefore1753BIGINT

DECLARE @TimeTicksBIGINT

DECLARE @SecondsBIGINT

IF @Ticks < CONVERT(BIGINT,624511296000000000)

BEGIN

SET @Ticks = CONVERT(BIGINT,624511296000000000)

END

SET @Days = @Ticks / CONVERT(BIGINT,864000000000)

SET @DaysBefore1753 = CONVERT(BIGINT,639905)

SET @TimeTicks = @Ticks % CONVERT(BIGINT,864000000000)

SET @Seconds = @TimeTicks / CONVERT(BIGINT,10000000)

RETURN DATEADD(s,@Seconds,DATEADD(d,@Days - @DaysBefore1753,CONVERT(DATETIME,'1/1/1753')))

END

i think that is the fucntion used to convert the ticks to datetime. i just dont know how i can use it in my query to convert back to datetime