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Function and Procedure : Get Last Friday

May 15, 2003



>>Script Language and Platform: SQL Server 2000 ,SQL Server 7.0
Given any date,this function/procedure will accurately return the date of the previous Friday.

This can be used in DTS ,Job or other query purpose.It can be used to get data of last Friday for statistic analysis or data comparison.

Author: Claire Hsu


/*
   *	Script Language and Platform:MS SQL 2000,MS SQL 7.0
   *	Objecttive: Simple scrip to return last friday 
   *	Author:Claire Hsu  
   *	Date  :2003/5/11
   *	Email:messageclaire@yahoo.com
   *	Description:This script contains both funciton and procedure.
   		You could apply accordingly
*/



--Queried in Function 
Create function dbo.getfri (@day datetime)
returns datetime
as
begin
declare @output datetime
if datepart(dw,@day) <> 7
set @output = dateadd(d,(-1)*(datepart(dw,@day)+1),@day)
else
set @output = dateadd(d,-1,@day)
return @output
end



--Usage1:Used in table
--Example:Table Schedule with 2 columns date1 and date2
--select dbo.getfri(date1),dbo.getfri(date2) from Schedule

--Usage2:Used in select statement
--select dbo.getfri(getdate())
--select dbo.getfri('5/11/2003')



/*****************************************************************/



--Queried as procedure
create procedure getfriday @day datetime
as
declare @output datetime
if datepart(dw,@day) <> 7
set @output = dateadd(d,(-1)*(datepart(dw,@day)+1),@day)
else
set @output = dateadd(d,-1,@day)
select @output



--Usage
--exec getfriday '2/3/2003'

Disclaimer: We hope that the information on these script pages is valuable to you. Your use of the information contained in these pages, however, is at your sole risk. All information on these pages is provided "as -is", without any warranty, whether express or implied, of its accuracy, completeness, or fitness for a particular purpose... Disclaimer Continued


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