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SQL Scripts & Samples

Posted Oct 6, 2006

UNIX POSIX Time

By DatabaseJournal.com Staff



>>Script Language and Platform: SQL Server
Displays UNIX POSIX time in Seconds and reverse UNIX POSIX time as Date.

Usage:

select dbo.POSIXTIME('09/09/1974 04:22:000') as UNIX_POSIX_Time_as_Secs
--Result
--UNIX_POSIX_Time_as_Secs 
----------------------- 
--147932520
GO
select dbo.ReversePOSIXTIME(147932520) as Reverse_UNIX_POSIX_Time_as_Date

--Reverse_UNIX_POSIX_Time_as_Date                        
------------------------------------------------------ 
--1974-09-09 04:22:00.000
GO

Author: MAK


if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[POSIXTIME]') 
   and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[POSIXTIME]
GO
Create function dbo.POSIXTIME(@date datetime)
returns bigint
as
begin 
return datediff(ss,'01/01/1970 00:00:000',@date)
end
go
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[ReversePOSIXTime]') 
   and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[ReversePOSIXTime]
GO
Create function dbo.ReversePOSIXTime(@secs bigint)
returns datetime
as
begin 
return dateadd(ss,@secs,'01/01/1970')
end
GO

select dbo.POSIXTIME('09/09/1974 04:22:000') as UNIX_POSIX_Time_as_Secs
--Result
--UNIX_POSIX_Time_as_Secs 
----------------------- 
--147932520
GO
select dbo.ReversePOSIXTIME(147932520) as Reverse_UNIX_POSIX_Time_as_Date

--Reverse_UNIX_POSIX_Time_as_Date                        
------------------------------------------------------ 
--1974-09-09 04:22:00.000
GO


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