I use DATEDIFF function to filter records added this week only:

DATEDIFF(week, DateCreated, GETDATE()) = 0

and I noticed what it's assumed what week starts on Sunday. But in my case I would prefer to set start of week on Monday. Is it possible somehow in T-SQL?

Thanks!

Update:

Below is an example showing what DATEDIFF doesn't check @@DATEFIRST variable so I need another solution.

SET DATEFIRST 1;

SELECT 
    DateCreated, 
    DATEDIFF(week, DateCreated, CAST('20090725' AS DATETIME)) AS D25, 
    DATEDIFF(week, DateCreated, CAST('20090726' AS DATETIME)) AS D26
FROM
(
    SELECT CAST('20090724' AS DATETIME) AS DateCreated
    UNION 
    SELECT CAST('20090725' AS DATETIME) AS DateCreated
) AS T

Output:

DateCreated             D25         D26
----------------------- ----------- -----------
2009-07-24 00:00:00.000 0           1
2009-07-25 00:00:00.000 0           1

(2 row(s) affected)

26 Jul 2009 is Sunday, and I want DATEDIFF returns 0 in third column too.

t-sql date datediff
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