Add days in date in yyyymmdd format SQL server

Question

I have a hard-coded date in a variable in yyyymmdd format

DECLARE @StartDate = 20160101;

Now I want to add 365 days in this date.

When I do this 20160101 + 365, it gives incorrect output 20160466, it should give me answer after adding 365 days which I think is 20160102

Please tell me how to do it in SQL server in DECLARE variable ? I want output in yyyymmdd format

Thanks,

Aiden

Answer 1

DECLARE @StartDate INT = '20161117';
select convert(varchar,CONVERT(datetime,convert(char(8),@StartDate))+365,112)

Answer 2

Put the date in quotes and then use DATEADD :

DECLARE @StartDate = '2016-01-01';

SELECT DATEADD (day, 365, @StartDate)
FROM yourTable

Answer 3

DECLARE @Date DATE= '20160101'SELECT DATEADD(DAY,365,@Date)

FOR INT DATA TYPE :
DECLARE @Date INT = '20160101'
SELECT DATEADD(DAY,365,CONVERT (DATETIME,CONVERT(CHAR(8),@Date))) 

Answer 4

DECLARE @StartDate INT = 20161117;

select cast(convert(varchar,cast(cast(@StartDate as varchar) as datetime)+366,112) as INT)