Question

I work with SQL Server 2005. I have a start and end date.

Ex:

START_DATE    END_DATE
2011-04-24    2012-05-05 

I want to get all the start day (SQL is set so that it’s sunday) and end day (saturday) of each week between the two dates.

Desired result :

2011-04-24    2011-04-30
2011-05-01    2011-05-07
2011-05-08    2011-05-14
....
2012-04-29    2012-05-05

Now I know I could do something like DATEADD(week, 1, 2011-04-24) until I get to my end date, but I don’t quite see how to do it until I get to my end date (without having a cursor or a while). I would like to do it in one query.

Can anyone help?

Answer 1

Just found a way to do it with recursivity!

;WITH DaysOfWeek AS 
( 
    SELECT {d '2011-04-24'} AS StartOfWeek
    UNION ALL 
    SELECT DATEADD( week, 1, jdr.StartOfWeek) AS StartOfWeek
    FROM JoursDuReleve jdr 
    WHERE DATEADD(week, 1, jdr.StartOfWeek) <= {d '2012-05-05'}
) 
SELECT StartOfWeek, DATEADD(day, 6, StartOfWeek) AS EndOfWeek  
FROM DaysOfWeek
ORDER BY StartOfWeek DESC 
OPTION (MAXRECURSION 0)