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decimal
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VM-723206
VM-723206
Posted Tuesday, June 16, 2009 11:57 PM
SSChasing Mays
Group: General Forum Members
Last Login: Saturday, April 06, 2013 12:20 AM
Points: 649,
Visits: 263
Comments posted to this topic are about the item
decimal
Post #736230
hakan.winther
hakan.winther
Posted Wednesday, June 17, 2009 2:27 AM
SSCrazy
Group: General Forum Members
Last Login: Monday, May 06, 2013 5:31 AM
Points: 2,226,
Visits: 438
Hi!
My recommendation is to never use default values because of maintainability. What would happen if MS (I really hope they dont) changes the default value for decimal in this case? You will get a different result than expected. Thats one of the reasons I never rely on default values.
Håkan Winther
/Håkan Winther
MCITP:Database Developer 2008
Post #736283
ta.bu.shi.da.yu
ta.bu.shi.da.yu
Posted Wednesday, June 17, 2009 6:29 AM
SSC Veteran
Group: General Forum Members
Last Login: Sunday, July 03, 2011 7:09 AM
Points: 258,
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I'm curious where it speaks about rounding in the
linked article
... I couldn't see it anywhere. It just says the default for the precision and the scale!
Random Technical Stuff
Post #736461
Noel McKinney
Noel McKinney
Posted Wednesday, June 17, 2009 9:05 AM
SSCrazy
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Last Login: Thursday, April 05, 2012 2:35 PM
Points: 2,007,
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ta.bu.shi.da.yu (6/17/2009)
I'm curious where it speaks about rounding in the
linked article
... I couldn't see it anywhere. It just says the default for the precision and the scale!
True, you would have to click through links at the bottom of the article to get to this page that discusses rounding:
http://msdn.microsoft.com/en-us/library/ms191530.aspx#_decimal
Post #736676
ta.bu.shi.da.yu
ta.bu.shi.da.yu
Posted Thursday, June 18, 2009 5:33 AM
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Last Login: Sunday, July 03, 2011 7:09 AM
Points: 258,
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Ah... but how would you get around that? Is there any way of disabling the rounding?
Random Technical Stuff
Post #737417
Noel McKinney
Noel McKinney
Posted Thursday, June 18, 2009 5:56 AM
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Last Login: Thursday, April 05, 2012 2:35 PM
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ta.bu.shi.da.yu (6/18/2009)
Ah... but how would you get around that? Is there any way of disabling the rounding?
You could use SET NUMERIC_ROUNDABORT ON to get an error instead of a rounded value. Using this with the question's query gives an error message, for example
SET NUMERIC_ROUNDABORT ON
declare @d decimal
select @d = 3.564636
select @d
Msg 8115, Level 16, State 7, Line 7
Arithmetic overflow error converting numeric to data type numeric.
Post #737433
David Burrows
David Burrows
Posted Thursday, June 18, 2009 7:20 AM
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Last Login: 2 days ago @ 11:13 AM
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ta.bu.shi.da.yu (6/18/2009)
Ah... but how would you get around that? Is there any way of disabling the rounding?
Use FLOOR
Far away is close at hand in the images of elsewhere.
Anon.
Post #737511
Bhavesh_Patel
Bhavesh_Patel
Posted Friday, December 11, 2009 4:10 AM
SSChasing Mays
Group: General Forum Members
Last Login: Friday, January 11, 2013 12:41 PM
Points: 621,
Visits: 297
Added to my knowledge base - default decimal is rounded of.
Bhavesh Patel
http://bhaveshgpatel.wordpress.com/
Post #832809
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