Please start any new threads on our new site at https://forums.sqlteam.com. We've got lots of great SQL Server experts to answer whatever question you can come up with.

 All Forums
 General SQL Server Forums
 New to SQL Server Programming
 Date Time Fields

Author  Topic 

rnelsch
Starting Member

31 Posts

Posted - 2012-04-25 : 15:50:18
Its been years since I've written a query to include a date but ignore the time. Out field has both date and time built in, ie. 4/25/2012 9:11:42 AM and I want to run a query using the "Where" clause for the date but not the time? Any suggestions?



Ryan A Nelsch

Lamprey
Master Smack Fu Yak Hacker

4614 Posts

Posted - 2012-04-25 : 17:02:14
Assuming you want all rows with a date equal to 2012-04-25, then something like:
SELECT *
FROM TableName
WHERE DateTimeColumn >= '20120425'
AND DateTimeColumn < '20120426'
Go to Top of Page

sql-programmers
Posting Yak Master

190 Posts

Posted - 2012-04-25 : 23:13:55

Hi,

DECLARE @STARTDATE DATETIME = '4/25/2012 9:11:42 AM'
DECLARE @ENDDATE DATETIME = '4/26/2012 9:11:42 AM'
SELECT @STARTDATE, @ENDDATE
SELECT CONVERT(VARCHAR, @STARTDATE, 112), CONVERT(VARCHAR, @ENDDATE, 112)
FROM TableName
WHERE CONVERT(VARCHAR, DateTimeColumn, 112) >= CONVERT(VARCHAR, @STARTDATE, 112)
AND CONVERT(VARCHAR, DateTimeColumn, 112) < CONVERT(VARCHAR, @ENDDATE, 112)




SQL Server Programmers and Consultants
http://www.sql-programmers.com/
Go to Top of Page

khtan
In (Som, Ni, Yak)

17689 Posts

Posted - 2012-04-25 : 23:24:44
quote:
Originally posted by sql-programmers


WHERE CONVERT(VARCHAR, DateTimeColumn, 112) >= CONVERT(VARCHAR, @STARTDATE, 112)
AND CONVERT(VARCHAR, DateTimeColumn, 112) < CONVERT(VARCHAR, @ENDDATE, 112)


SQL Server Programmers and Consultants
http://www.sql-programmers.com/



Applying function on the column will result in the engine not able to utilize any index on the DateTimeColumn.

The method posted by Lamprey is recommended.



KH
[spoiler]Time is always against us[/spoiler]

Go to Top of Page

madhivanan
Premature Yak Congratulator

22864 Posts

Posted - 2012-04-26 : 08:03:39
More examples
http://beyondrelational.com/modules/2/blogs/70/posts/10899/understanding-datetime-column-part-iii.aspx

Madhivanan

Failing to plan is Planning to fail
Go to Top of Page
   

- Advertisement -