truncation error in sybase ?

Posted on 2004-11-02
Last Modified: 2010-10-05
hello experts,

I get truncation error when i try to do the following

set nocount on
declare @var1 int,
        @var2 int,
        @var3 numeric(10,2)
select @var1 = 5
select @var2 = 6

select @var3 = @var1/@var2

select @var3


I get a 0 in @var3 and a trucation error occured ..

basically i want to do a @var1/@var2 * 100 (to find out the % )

how can this be done ?

Question by:Sadagopank
    LVL 14

    Accepted Solution

    You need to convert @var1 to some more precise numeric type (eg. numeric(10,2) ) to get rid of 0 and convert whole expresion to the same type to get rid of truncation error:

    select @var3 = convert(numeric(10,2),convert(numeric(10,2),@var1)/@var2)

    LVL 14

    Expert Comment

    Other way how to get rid of truncation error:

    set arithabort numeric_truncation off
    select @var3 = convert(numeric(10,2),@var1)/@var2
    set arithabort numeric_truncation on
    LVL 24

    Expert Comment

    Even more simply:

    select @var3 = 1.0*@var1/@var2

    There is a hierarchy of datatypes. When the expression is just "@var1/@var2", Sybase sees only integers, and assumes you want integer division. By adding the 1.0 at the start of the expression, Sybase understands you're talking about numerics (as numerics take precedence over integers, so the entire expression is "promoted" to a numeric).

    Author Comment

    thanks jan and joe ... the solution worked just fine.


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