Returns the current value of the SET DATEFIRST parameter, which indicates the specified first day of each week: 1 for Monday, 2 for Wednesday, and so on through 7 for Sunday.
@@DATEFIRST
tinyint
The U.S. English default is 7, Sunday.
This example sets the first day of the week to 5 (Friday), and assumes the current day to be Saturday. The SELECT statement returns the DATEFIRST value and the number of the current day of the week.
SET DATEFIRST 5
SELECT @@DATEFIRST AS '1st Day', DATEPART(dw, GETDATE()) AS 'Today'
Here is the result set. Counting from Friday, today (Saturday) is day 2.
1st Day Today
---------------- --------------
5 2
| DATEPART | Configuration Functions |
| SET DATEFIRST |