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@@DATEFIRST - DATEFIRST Function

Posted By: Sarita Patel     Category: SQL Server     Views: 2181

This article explains about @@DATEFIRST function in sql server with examples.

@@DATEFIRST function returns the SET DATEFIRST parameter. It specifies first day of each week i.e. 1 for monday, 2 for tuesday ... 7for sunday.  


Syntax of @@DATEFIRST Function :

@@DATEFIRST

Return type of @@DATEFIRST function is tinyint.


Examples of @@DATEFIRST Function :

Example 1 : Use of @@DATEFIRST function in select clause

SELECT @@DATEFIRST

Output
7

Above example returns 7 as current day of the week.



Example 2 : Use of @@DATEFIRST function in select clause 

SET DATEFIRST 1
SELECT @@DATEFIRST

Output
1

Above example sets the first day of the week to 1 i.e monday and assumes the current day is tuesday.
  
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Sarita Patel
Sarita Patel author of @@DATEFIRST - DATEFIRST Function is from United States.
 
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