Solved

First and Last day of the week in any given Date

Posted on 2006-07-15
8
261 Views
Last Modified: 2008-02-26
I want to get the first and the last day of the week by giving any date, in my case our first day start from saturday.

for example if i give 18/07/2006 it should return 15 for the first day of the week and 21 as the last day of the week.

Kind regards,
0
Comment
Question by:altuwairqi2
  • 4
  • 2
8 Comments
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 17114506
Something like this:

Declare      @Dat datetime
Set @Dat = '2006-07-18'


Declare @DateFirst tinyint

Set @DateFirst = @@DATEFIRST    -- Save old @@DATEFIRST value
SET DATEFIRST 6

Select      DATEADD(day, -DATEPART(weekday, @Dat) + 1, @Dat) FirstDayOfWeek,
      DATEADD(day, 7 - DATEPART(weekday, @Dat), @Dat) LastDayOfWeek
SET DATEFIRST @DateFirst

Select @@DATEFIRST    -- Restore old @@DATEFIRST value
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 17114521
This might be tad simpler:

Declare      @Dat datetime
Set @Dat = '2006-07-18'

Select      DATEADD(day, 7 - @@DATEFIRST -DATEPART(weekday, @Dat), @Dat) FirstDayOfWeek,
      DATEADD(day, 6 - DATEPART(weekday, @Dat), @Dat) LastDayOfWeek


0
 
LVL 75

Accepted Solution

by:
Anthony Perkins earned 250 total points
ID: 17114541
Oops, I forgot to allow for a different @@DATEFIRST in the second expression, it should be:

Select      DATEADD(day, 7 - @@DATEFIRST - DATEPART(weekday, @Dat), @Dat) FirstDayOfWeek,
      DATEADD(day, 13 - @@DATEFIRST - DATEPART(weekday, @Dat), @Dat) LastDayOfWeek

Sorry for the multiple posts.
0
Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

 
LVL 75

Assisted Solution

by:Aneesh Retnakaran
Aneesh Retnakaran earned 250 total points
ID: 17114542
Hi altuwairqi2,


CREATE FUNCTION [dbo].[ufn_GetLastDayOfWeek] ( @pInputDate DATETIME )
RETURNS DATETIME
BEGIN
    SET @pInputDate = CONVERT(VARCHAR(10), @pInputDate, 111)
    RETURN DATEADD(DD, 1 - DATEPART(DW, @pInputDate)+6, @pInputDate)
END
GO


select [dbo].[ufn_GetLastDayOfWeek]('20060716')



Aneesh R!
0
 
LVL 75

Expert Comment

by:Aneesh Retnakaran
ID: 17594867
dont you think splitting the points ...
:(
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 17597781
Fine with me.
0

Featured Post

Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Introduction In my previous article (http://www.experts-exchange.com/Microsoft/Development/MS-SQL-Server/SSIS/A_9150-Loading-XML-Using-SSIS.html) I showed you how the XML Source component can be used to load XML files into a SQL Server database, us…
In this article we will learn how to fix  “Cannot install SQL Server 2014 Service Pack 2: Unable to install windows installer msi file” error ?
Using examples as well as descriptions, and references to Books Online, show the documentation available for date manipulation functions and by using a select few of these functions, show how date based data can be manipulated with these functions.
This videos aims to give the viewer a basic demonstration of how a user can query current session information by using the SYS_CONTEXT function

713 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question