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Message Posted: Wed, 16 Jan 2013 @ 22:46:14 GMT


     
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Subj:   Re: Teradata decimal roundoff issue
 
From:   McCall, Glenn David

On my Teradata (TD 14)

     Select cast (20.685 as decimal(10,2)) gives 20.685

Whereas:

     Select cast (20.6851 as decimal(10,2)) gives 20.69

And

     Select cast (20.695 as decimal(10,2)) gives 20.70

which I believe is correct behaviour for rounding as defined in mathematics.

Nevertheless there is a dbscontrol setting (RoundHalfwayMagUp) which can be adjusted to change the behaviour of rounding of decimals *****BE CAREFUL**** this is a system wide setting - it affects all queries for all users.



     
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