What is wrong with this SQL Server query division calculation?

Question

I have this table structure on a SQL Server 2008 R2 database:

  CREATE TABLE FormTest
(   
clientid char(10),
DateSelected date,
A int,
B int,
C int
)
         


        

Answer 1

It's because you are doing integer division. You should convert one of the operands to float, or decimal (depending on the precision and purpose of the calculation you are doing), using something like:

((CAST((a+ b + c) AS FLOAT) / 3) / 216647 * 10)

or possibly:

(((a+ b + c) / 3.0) / 216647.0 * 10)