Difference in rounding in sql and clr

Question

I have searched and can not find the answer. I double checked the data types between SQL and CLR and I appear to have that correct. But I am getting a different result between using CLR and SQL. Not much, but enough to be off a penny. And that is not acceptable.

Example in VB.NET

Dim dLoanAmount As Decimal = 169500  
Dim dNetDiscount As Decimal = 100.871  
Dim dDiscountPremium As Decimal = (dLoanAmount * (dNetDiscount - 100.0) / 100.0) 
Console.WriteLine("original amount is " + dDiscountPremium.ToString())  

will display 1476.34499999999

Example in SQL

DECLARE @loanAmt decimal (20,10)  
DECLARE @discount decimal (20,10)  
SET @loanAmt = 169500.000000  
SET @discount = 100.871000  
select   @loanAmt*(@discount-100.0)/100.0  

that returns 1476.345000000000000

We have to use the VB for some documents, but for some file transfers we use sql. Anyone have any suggestions why this is?

cheers
bob

Answer 1

You're using double literals instead of decimal ones. Try this:

Dim dLoanAmount As Decimal = 169500D
Dim dNetDiscount As Decimal = 100.871D  
Dim dDiscountPremium As Decimal = (dLoanAmount * (dNetDiscount - 100D) / 100D) 
Console.WriteLine("original amount is " + dDiscountPremium.ToString())