Check for leap year

Question

How do I check if a year is a leap year?

I have this code:

declare @year int
set @year = 1968

SELECT CASE WHEN @YEAR =  THEN \'LEAP          


        

Answer 1

Leap year calculation:

(@year % 4 = 0) and (@year % 100 != 0) or (@year % 400 = 0)

When this is true, then it is a leap year. Or to put it in case statement

select case when
    (
        (@year % 4 = 0) and (@year % 100 != 0) or
        (@year % 400 = 0)
    ) then 'LEAP' else 'USUAL' end
;