Understanding Date and Time Functions and Operations in SQL Server
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by Abhishek Kumar Singh
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Using SET DATEFORMAT command in SQL Server 2005

By using SET DATEFORMAT <format> through we can set SQL Server to accept a different format of date string to be assigned and used in DATETIME variable.

For example, try to execute the following query:

DECLARE @dt DATETIME
SET @dt = '23/2008/09'
SELECT @dt

In this query we tried to assign a date string of format DYM (date-year-month) into a DATETIME variable, which SQL Server does not accept by default. SQL Server may show the following error. The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value.

To allow SQL Server to do so, we need to execute the following statement.

SET DATEFORMAT DYM

Now executing this query again will be successful.

Query

DECLARE @dt DATETIME
SET @dt = '23/2008/09'
SELECT @dt

Result

2008-09-23 00:00:00.000

One important point to note is that SET DATEFORMAT <format> command remains valid only for the current connection.


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User Comments

Title: datetime in sqlserver   
Name: murali
Date: 2010-11-11 12:52:06 AM
Comment:
How to alter the datetime to date conversion
Title: Great!!   
Name: Shyam
Date: 2009-12-30 12:33:12 AM
Comment:
Thank you for your nice article.
it Gives me a better understanding to know time Manipulation Function!
Title: awesome   
Name: mahesh
Date: 2009-05-29 4:15:11 PM
Comment:
great job it helped me a lot thank you very much!!!!!!
Title: Great!!!   
Name: Gourik Kumar Bora
Date: 2009-03-31 3:21:57 AM
Comment:
Hi,
Thanks a lot. quite a helpful article..
Title: set datefirst inside function   
Name: ll
Date: 2008-11-17 7:24:10 AM
Comment:
how to use set datefirst inside function
Title: Thanks.   
Name: Abhishek (Author)
Date: 2008-11-13 8:05:34 AM
Comment:
Thanks to all of you for appreaciating my article.
Title: Thanks a Lot   
Name: Krishna Prabhu
Date: 2008-11-13 4:43:50 AM
Comment:
Thanks a lot for giving this artical.It helped in completing project
Title: Thnx a Ton   
Name: Neha Mishra
Date: 2008-11-12 2:15:52 AM
Comment:
Thnx a ton for such a detailed and informatic article. It helped in clearing almost all my doubts.
Title: Thank you   
Name: Vishal s.surana
Date: 2008-11-11 7:44:52 AM
Comment:
Thank you for your nice article.It is very helpful to understand differnt behaviour of datetime datatype.






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