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Brian K. McDonald SQLBIGeek Twitter: @briankmcdonald |
Welcome to the fourth post of my “SQLBIGeek’s Function Friday” blog series. In this series, I am hoping that I can provide some of the details about functions that I have either found on the internet or something that I had to create to meet a need. If it is something that I come across, I will attempt to make it shorter and/or perform better. If it is something I wrote, it is just something to share with you J Either way, I hope that you enjoy the series and that you can get some useful ideas or functions to use in your environment.
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I can’t remember what I used this for when I created it, but I thought that I would share it none-the-less. Somewhat related to my prior blog on getting the first day of month, this can be used to get the last day of the prior month based on whatever date that is passed into the function. Script 1: Function CREATE FUNCTION [dbo].[ufn_LastDayOfPriorMonth] ( @Date SMALLDATETIME /*========================================================================= Created By: Brian K. McDonald, MCDBA, MCSD (www.SQLBIGeek.com) Email: bmcdonald@SQLBIGeek.com Twitter: @briankmcdonald Date: 10/29/2010 Purpose: Return the last day of the prior month based on date passed into the function Usage: SELECT dbo.ufn_LastDayOfPriorMonth ('10/29/2010') ---------------------------------------------------------------------------- Modification History ---------------------------------------------------------------------------- ==========================================================================*/ ) RETURNS SMALLDATETIME AS BEGIN DECLARE @LastDayOfPriorMonth SMALLDATETIME SET @LastDayOfPriorMonth = DATEADD(d,(-1*DATEPART(d,CONVERT(VARCHAR(12),@Date,101))),CONVERT(VARCHAR(12),@Date,101)) RETURN @LastDayOfPriorMonth END GO --A few sample executions SELECT AdventureWorks.dbo.ufn_LastDayOfPriorMonth('1/10/2010') --returns 12/31/2009 SELECT AdventureWorks.dbo.ufn_LastDayOfPriorMonth('6/15/2010') --returns 5/31/2010 SELECT AdventureWorks.dbo.ufn_LastDayOfPriorMonth('10/29/2010') --returns 9/30/2010 SELECT AdventureWorks.dbo.ufn_LastDayOfPriorMonth('11/29/2010') --returns 10/31/2010 --Clean up DROP FUNCTION dbo.ufn_LastDayOfPriorMonth Please be sure to return for the next BISQLGeek's Function Friday! I hope that you have enjoyed this post. If you did, please take just a moment to rate it below! Also, if you don’t already, please be sure to follow me on twitter at @briankmcdonald. Also note that you can subscribe to an RSS feed of my blogs. Brian K. McDonald, MCDBA, MCSD Email: bmcdonald@pragmaticworks.com | Blogs: SQLBIGeek | SQLServerCentral | BIDN Twitter: @briankmcdonald | LinkedIn: http://tinyurl.com/BrianKMcDonald
Business Intelligence Consultant – Pragmatic Works
Posted by Brian K. McDonald on 6 November 2010
In a rush before my battery died last night, I posted the wrong title for this post. I guess one could say that I pasted the wrong content, but either way, the title and the content are mix matched. :) I am sorry for that. I did correct it on my primary blogging site and the "Return Last Date of the Prior Month" blog can be found here: www.bidn.com/.../sqlbigeek’s-function-friday-–-return-last-date-of-the-prior-month
First Day Of Month Function here: www.bidn.com/.../sqlbigeek’s-function-friday-–-return-first-date-of-month