将天转换为年，格式如下？

Question

How to convert 1701 days to 4.660 years...

I used this following query but i get only Year ....

My query:

SELECT DATEDIFF(YEAR , B.emp_join_date, GETDATE())  from employee B

Output I get:

4

Expected output:

4.660 

How i get the result?

Answer 1

I think the simplest way is to use the approximation of 365.25 days per year:

select 1701 / 365.25

In your case, this would be:

SELECT DATEDIFF(day, e.emp_join_date, GETDATE()) / 365.25
FROM employee e;

This actually returns 4.657. If you want 4.660, can you explain how that is calculated?