Question

In SQL, I have col1 and col2. Both are integers.

I want to do like:

select col1/col2 from tbl1

I get the result 1 where col1=3 and col2=2

The result I want is 1.1

I put round(col1/col2,2). The result is still 1.

I put decimal(col1/col2,2). The decimal is not built in function.

How can I do exactly to get 1.1?

Answer 1

You will need to cast or convert the values to decimal before division. Take a look at this
http://msdn.microsoft.com/en-us/library/aa226054.aspx

For example

DECLARE @num1 int = 3 DECLARE @num2 int = 2

SELECT @num1/@num2

SELECT @num1/CONVERT(decimal(4,2), @num2)

The first SELECT will result in what you’re seeing while the second SELECT will have the correct answer 1.500000