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

Our new SQL Server Forums are live! Come on over! We've restricted the ability to create new threads on these forums.

SQL Server Forums
Profile | Active Topics | Members | Search | Forum FAQ
 
Register Now and get your question answered!
Username:
Password:
Save Password
Forgot your Password?

 All Forums
 SQL Server 2008 Forums
 Transact-SQL (2008)
 Round down to nearest 0.5
 Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

jsasala
Starting Member

2 Posts

Posted - 03/20/2013 :  11:38:51  Show Profile  Reply with Quote
I have searched around a lot and tried many different examples but can't seem to find the correct way. I basically need to round down to the nearest 0.5 decimal. So if the number is 3.455, I need it to show 3.0 and if the number is 3.8998 i need it to show 3.5. The number of decimal places that the original number results in can vary but i need it to only return 1 decimal place. Any suggestions? I appreciate any help.

visakh16
Very Important crosS Applying yaK Herder

India
52326 Posts

Posted - 03/20/2013 :  13:10:51  Show Profile  Reply with Quote
do you mean this?


declare @test table
(
Field decimal(10,4)
)
insert @test
SELECT '3.456' AS Field UNION ALL
SELECT '3.7823' UNION ALL
SELECT '4.276' UNION ALL
SELECT '4.995'




SELECT Field,FLOOR(Field) + CASE WHEN  SIGN(0.5-(Field-FLOOR(Field))) >0 THEN 0 ELSE 0.5 END
FROM @test


output
----------------------------
Field   Rounded
----------------------------
3.4560	3.0
3.7823	3.5
4.2760	4.0
4.9950	4.5



------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

Go to Top of Page

SwePeso
Patron Saint of Lost Yaks

Sweden
30421 Posts

Posted - 03/20/2013 :  14:59:04  Show Profile  Visit SwePeso's Homepage  Reply with Quote
Why not keep it simple?
SELECT  Field,
        FLOOR(2 * Field) / 2
FROM    @Test


N 56°04'39.26"
E 12°55'05.63"

Edited by - SwePeso on 03/20/2013 14:59:29
Go to Top of Page

jsasala
Starting Member

2 Posts

Posted - 03/21/2013 :  10:11:26  Show Profile  Reply with Quote
If the output is just a single cell, do i still need to use the table portion of the code, or is there a easier way of doing that?
Go to Top of Page

SwePeso
Patron Saint of Lost Yaks

Sweden
30421 Posts

Posted - 03/21/2013 :  11:02:32  Show Profile  Visit SwePeso's Homepage  Reply with Quote
Just this part
,FLOOR(2 * Field) / 2 AS RoundedDown



N 56°04'39.26"
E 12°55'05.63"
Go to Top of Page
  Previous Topic Topic Next Topic  
 Reply to Topic
 Printer Friendly
Jump To:
SQL Server Forums © 2000-2009 SQLTeam Publishing, LLC Go To Top Of Page
This page was generated in 0.07 seconds. Powered By: Snitz Forums 2000