Comments on: Comparing dates without times in SQL Server

By: Claes

Claes — Tue, 25 Aug 2009 09:13:39 +0000

If you compare two datetime fields in this way, the cast back to datetime should not be necessary. This saves some execution time.

By: Blerta

Blerta — Fri, 31 Jul 2009 11:52:19 +0000

Great article and big help. Thank you!

By: Marianne

Marianne — Tue, 09 Jun 2009 19:31:34 +0000

Thank you! This was exactly what I needed

By: Scott Jibben

Scott Jibben — Thu, 04 Jun 2009 20:18:47 +0000

This web editor converted the 8, followed by a right parenthesis into a smiley face…

By: Scott Jibben

Scott Jibben — Thu, 04 Jun 2009 20:16:51 +0000

If you want just the time portion from a datetime column, read the information on the CONVERT() function in the docs for more info.

(12 hour)

SELECT CONVERT(varchar(12), myDateField, FROM myTable;

or (24 hour)

SELECT CONVERT(varchar(12), myDateField, 14) FROM myTable;

By: john persona

john persona — Tue, 12 May 2009 06:38:19 +0000

great article, but it does not explain how to get only time portion from full date.

By: Justin Schier

Justin Schier — Sun, 10 May 2009 18:58:45 +0000

In the above code, the dashes should be double dashes. This website changed them to long dashes.

By: Justin Schier

Justin Schier — Sun, 10 May 2009 18:57:02 +0000

I made a function that I use called WholeDay() so you can just wrap any date in WholeDay(DATE_COLUMN). This is SQL Server, and I always have to use dbo.WholeDay(DATE_COLUMN)

Here's the function:

/****** Object:  UserDefinedFunction [dbo].[WholeDay]    Script Date: 05/10/2009 11:55:50 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
– =============================================
– Author:        Justin Schier
– Create date: 4/9/2008
– Description:    Drops Time from DateTime
– =============================================
CREATE FUNCTION [dbo].[WholeDay]
(
    – Add the parameters for the function here
    @p1 datetime
)
RETURNS datetime
AS
BEGIN
    – Declare the return variable here
    DECLARE @Result datetime

– Add the T-SQL statements to compute the return value here
SELECT @Result = CAST(FLOOR(CAST(@p1 AS FLOAT)) AS DATETIME)

– Return the result of the function
RETURN @Result

END

By: Ting

Ting — Fri, 08 May 2009 18:54:40 +0000

Great aritcle! That's exactly I was looking for!

Thanks!

By: Ryan

Ryan — Wed, 11 Feb 2009 09:46:06 +0000

Another cool way a friend showed me of doing this is …

SELECT CONVERT(DATETIME,CONVERT(VARCHAR(12), GETDATE(), 105))

… I think you can get the different codes (e.g. 105) in the msdn cast/convert section.

I like the first solution though. Shows how many tricks can be learned in sql