Find the Date range of week by current date in sql?

Question

I want to find record by this week just declare current date. Example:

     select datename(dw,getdate())  -- Example today is Friday "27-04-2012"

so how can i get date range

     start on monday "23-04-2012" or sunday "22-04-2012"  As @dateStart to

     end on sunday "29-04-2012"  or saturday "28-04-2012" As @dateEnd

then i can select query by

     select * from table where date>=@dateStart  AND date<=@dateEnd

Answer 1

Here are some helpful commands to get each day of the week

SELECT 
    DATEADD(wk, DATEDIFF(wk,0,GETDATE()), -2) SatOfPreviousWeek,
    DATEADD(wk, DATEDIFF(wk,0,GETDATE()), -1) SunOfCurrentWeek,
    DATEADD(wk, DATEDIFF(wk,0,GETDATE()), 0) MondayOfCurrentWeek,
    DATEADD(wk, DATEDIFF(wk,0,GETDATE()), 1) TuesOfCurrentWeek,
    DATEADD(wk, DATEDIFF(wk,0,GETDATE()), 2) WedOfCurrentWeek,
    DATEADD(wk, DATEDIFF(wk,0,GETDATE()), 3) ThursOfCurrentWeek,
    DATEADD(wk, DATEDIFF(wk,0,GETDATE()), 4) FriOfCurrentWeek,
    DATEADD(wk, DATEDIFF(wk,0,GETDATE()), 5) SatOfCurrentWeek

you would then use these in your query to get the date range:

SELECT *
FROM yourTable
WHERE yourDate >= DATEADD(wk, DATEDIFF(wk,0,GETDATE()), -1) -- Sunday
AND yourDate <= DATEADD(wk, DATEDIFF(wk,0,GETDATE()), 5) -- Saturday