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Discuss content posted by Timothy Bates
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Are all rounds created equal
19 posts, Page 2 of 2
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Are all rounds created equal
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Daniel Bowlin
Daniel Bowlin
Posted Wednesday, October 13, 2010 6:46 AM
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Interesting question. I thought all Microsoft software did banker's rounding. Thanks.
Post #1003546
Oleg Netchaev
Oleg Netchaev
Posted Wednesday, October 13, 2010 8:49 AM
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Daniel Bowlin (10/13/2010)
Interesting question. I thought all Microsoft software did banker's rounding. Thanks.
It is flexible. CLR procedures in SQL Server, any .NET code can use one of the two MidpointRounding enum values as a
mode
parameter value of the of the Math.Round method:
Math.Round(4.5, 0, MidpointRounding.AwayFromZero); -- 5
Math.Round(4.5, 0, MidpointRounding.ToEven); -- 4
Oleg
Post #1003704
timothy bates
timothy bates
Posted Wednesday, October 13, 2010 1:21 PM
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Thanks for the comments.
In a view SQL Server returned n.n where in query analyzer it returned n.n0 for each.
My main point was to showcase that there is disparity in programs as to how rounding is performed. Logic or specifications taken at face value (Round the average tax to the nearest tenth) can create differences in results. If you have an application performing the rounding and storing it in the db and run a periodic db script to verify you may get answers that result in 'random' discrepancies.
Tim
There are only 10 types of people that understand binary, those that do and those that do not.
Post #1003937
UMG Developer
UMG Developer
Posted Wednesday, October 13, 2010 6:16 PM
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Thanks for the question.
As a note I have always hated the round "to even" method that Microsoft sometimes uses.
Post #1004068
SQLRNNR
SQLRNNR
Posted Monday, October 18, 2010 10:17 AM
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Thanks for the QOTD
Jason
AKA CirqueDeSQLeil
I have given a name to my pain...
MCM SQL Server 2008
SQL RNNR
Posting Performance Based Questions - Gail Shaw
Posting Data Etiquette - Jeff Moden
Hidden RBAR - Jeff Moden
VLFs and the Tran Log - Kimberly Tripp
Post #1006348
Dhruvesh Shah
Dhruvesh Shah
Posted Tuesday, October 19, 2010 1:14 AM
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Awesome Question...
Post #1006742
sharath.chalamgari
sharath.chalamgari
Posted Tuesday, October 19, 2010 10:46 PM
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Thanks! it really helped me to understand clearly
Post #1007449
SQL-DBA-01
SQL-DBA-01
Posted Monday, November 01, 2010 8:09 AM
Right there with Babe
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Nice one. I hope 2.50 and 2.5 or 3.60 and 3.6 are taken as same!
Thanks.
Post #1013841
kalyani.k478
kalyani.k478
Posted Friday, November 30, 2012 2:16 AM
SSChasing Mays
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+1:)
Post #1391117
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