Question

i have a problem in this query

select 7.115 + 2.885

result is 10.000

versus this query

select round(7.115,2) + round(2.885,2)

result of it is 10.010

i wonder how to make it correct.

Answer 1

It is already correct. When you round it to 2 places, in both cases it is (correctly) being rounding up by effectively adding 0.005. The sum of these two rounding deltas is 0.01 so the result being 10.01 is as expected.

There is nothing to “fix” here – it is behaving correctly and as expected.

If you mean “how do I make it display 10.00 as the result of the addition”, do this:

select round(7.115 + 2.885, 2)