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Accurate DATETIME Range Searching in SQL Server

By , 9 Dec 2009
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When searching between datetimes in SQL(or SQL in a Stored Proc) we can't just do:
select * from <table>
where CreateTime >= @DateFrom and CreateTime <= @DateTo
If your search is date inclusive and you're not concerned with time, which most users aren't, then you need to add a little extra code to get the right results. Basically, you need to add one day to @DateTo and trunc. Here's a Sql Server 2005 function that will help:
 
CREATE FUNCTION [dbo].[trunc]
(
    @dt datetime
)
RETURNS datetime
AS
BEGIN
            return dateadd(day, datediff(day, 0, @dt), 0);
END
Now your SQL should be:
select * from <table>
where CreateTime >= dbo.trunc(@DateFrom)
and CreateTime < dbo.trunc(@DateTo + 1)
If you want more info about this then go to: Accurate DATETIME Range Searching in SQL Server[^]

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

Mark Graham
Web Developer Currently working on projects for May Gurney
United Kingdom United Kingdom
Areas of expertise: c#, asp.net, design patterns, GUI useability/layout

Comments and Discussions

 
GeneralMy vote of 4 Pinmembersource.compiler23-Jul-12 17:54 
QuestionWhat about... PinmemberPeter Tewkesbury4-Dec-09 8:51 
AnswerRe: What about... PinmemberMark Graham7-Dec-09 0:18 
The tip is more about awareness, but, absolutely, and I've no doubt this will be quicker.
 

GeneralRe: What about... Pinmembersupercat99-Dec-09 5:41 

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