Round a value to two decimal places in SQL

Question

I am trying to round a value in SQL, here is the code that I have:

select round(600.000,2)

How do I get the value 600.00 ?

Answer 1

Instead of round() convert to a decimal:

select cast(600.000 + 0.5 as decimal(10, 2) )

round() changes the value but it might not change the type of the result. Hence, you might still see extra decimal points (depending on the database and the application). Converting to a decimal with two digits of precision converts both the value and the type.