Question

select *, 
       datediff(Y,employee.joiningdate,getdate()) "retirementdate" 
from employee

How to get the mm-dd-yyyy format ?

Answer 1

The datediff function doesn’t return a date, so you can’t format it as a date. If it’s date formatting you want then you should take a look at this msdn article: http://msdn.microsoft.com/en-us/library/ms187928.aspx

If you just want to know how to format a date in sql :

SELECT convert(varchar, getdate(), 110)

But you should not convert dates in sql. Keep dates as dates and do the formatting in your application.