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Age exactly edad exacta

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Submitted on: 1/7/2010 9:08:25 AM
By: Alejo Carrilllo  
Level: Intermediate
User Rating: By 1 Users
Compatibility: SQL Server 2000, SQL Server 7.0, SQL Server 6.5 and earlier, Informix , Oracle, Other
Views: 4709
(About the author)
 
     Devuelve la diferencia entre fechas Result the diference between dates
 
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--**************************************
-- Name: Age exactly edad exacta
-- Description:Devuelve la diferencia entre fechas
Result the diference between dates
-- By: Alejo Carrilllo
--
-- Inputs:datestart dateend and accuracy
fecha inicial fecha final y precision
--
-- Returns:cadena con la diferencia entre la fecha inicial y final
string with the result between the start date and enddate
--
--This code is copyrighted and has-- limited warranties.Please see http://www.Planet-Source-Code.com/vb/scripts/ShowCode.asp?txtCodeId=1339&lngWId=5--for details.--**************************************

Create FUNCTION [dbo].[edadexacta]
(
	@fechaini datetime,
	@fechafin datetime,
	@precision int
)
RETURNS varchar(40)
AS
BEGIN
--	declare @fechaini datetime,	@fechafin datetime,	@precision int
--	set @fechaini= '1800-12-31'
--	set @fechafin= '2008-02-29'
--	set @precision = 3
	DECLARE @cad varchar(40), @meses int, @dias int, @aņos int, @fecmes datetime, @diasmes int
	 set @aņos =year(@fechafin) - year(@fechaini)	
	 set @meses = month(@fechafin)- month(@fechaini)
	 --obtiene dias del mes de la fecha inicial
	 set @fecmes = @fechaini - DAY(@fechaini) + 1
 set @diasmes=DATEDIFF(day, @fecmes, DATEADD(month, 1, @fecmes))
	--select @diasmes, @aņos, @meses
	 --fin dias mes
	 if @meses <0
	 begin	
	set @aņos = @aņos -1
	set @meses = @meses + 12	--el aņo descontado se suma a los meses
	 end
	 set @dias = day(@fechafin)- day(@fechaini)
	 if @dias <0
	 begin	
	 set @meses = @meses - 1	
	 set @dias = @dias + @diasmes	--el mes descontado se suma a los dias del mes de la fecha inicial
	 end
	if @precision >= 1
	 begin
	 if @aņos=1
	 set @cad = convert(nvarchar,@aņos)+' aņo ' 
	 else 
	 set @cad = convert(nvarchar,@aņos)+' aņos ' 
	 if @precision >= 2
	 begin 
	 if @meses=1
	set @cad = @cad +convert(nvarchar,@meses)+' mes ' 
	 else
	set @cad = @cad +convert(nvarchar,@meses)+' meses ' 
	 if @precision >= 3
	 if @dias=1
	set @cad = @cad +convert(nvarchar,@dias)+' dia'	
	else
	set @cad = @cad +convert(nvarchar,@dias)+' dias'	
	 end
	 end
--	select @cad
	RETURN @cad
END


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