Question

I am stuck and I have not done anything like this before. By providing todays date e.g 2010-12-04, I should get the following:

startdate = 2010-11-29
enddate = 2010-12-05

Basically I need to filter my query so it gives me data for this ‘week’

any idea on how to start this will be great!

Thanks,

Tarun

Answer 1

Updated: This function is due to Graham at SqlTeam. It returns Monday’s date for any given date; it should cope with any DATEFIRST setting:

CREATE FUNCTION dbo.WeekCommenceMondayDate(@MidWeekDate DateTime)
RETURNS DateTime AS
BEGIN
DECLARE @WeekCommence DateTime
    SET @WeekCommence = DateAdd(d, -((@@DATEFIRST + DatePart(dw, @MidWeekDate) -2) % 7), @MidWeekDate)
    RETURN @WeekCommence
END


declare @today datetime = '2010-12-04' 
declare @weekstartdate datetime

set  @weekstartdate = dbo.WeekCommenceMondayDate(@today)
select @weekstartdate as weekstartdate
select  DATEADD(DD, 6, @weekstartdate) as weekenddate

For a variety of date functions see here.