Converting year month day to date in sql server - sql

Question

My input to the stored procedure is a string (e.g '2 years 3 months 4 days') which is a future date. How to convert this to a date by comparing with current date?

Answer 1

declare #S varchar(50)
set #S = '2 years 3 months 4 days'
select dateadd(day, D.D, dateadd(month, D.M, dateadd(year, D.Y, getdate()))) as TheDate
from (select replace(replace(replace(#S, ' years ', '.'), ' months ', '.'), ' days', '')) as T(S)
cross apply (
select cast(parsename(T.S, 1) as int),
cast(parsename(T.S, 2) as int),
cast(parsename(T.S, 3) as int)Y
) as D(D, M, Y)
SQL Fiddle

Answer 2

You can use below Query in SP
select dateadd(yy,2,dateadd(m,3,dateadd(d,4,GETDATE())))
^Year ^Month ^Days
Here is the SP
create procedure test1
(
#year INT,
#month INT,
#day INT
)
AS
BEGIN
select dateadd(yy,#year,dateadd(m,#month,dateadd(d,#day,GETDATE())))
END

Answer 3

Use DATEADD, for example (add one year, to the current data):
DECLARE #datetime2 datetime2 = getdate();
SELECT 'year', DATEADD(year,1,#datetime2)
...
So, you should add 2 years, 3 months and 4 days to the current date and then return it as normal date (here I returned future year). Read here for details.
Before of the stored procedure invocation you should split the string in a server side language like PHP:
$str = '2 years 3 months 4 days';
preg_match_all('!\d+!', $str, $data);
So $data[0]=2, $data[1]=3 and $data[2] = 4, and so you can invoke #Luv procedure:
create procedure test1 -- thanks to Luv
(
#year INT,
#month INT,
#day INT
)
AS
BEGIN
select dateadd(yy,#year,dateadd(m,#month,dateadd(d,#day,GETDATE())))
END

Answer 4

https://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html
Convert seconds to human readable time duration
you may be able to split & convert this formatting into something which is useable via builtin SQL-functions - but i'd recommend using at least a pre-processing scriptlanguage like PHP in order to format the time correctly, PHP "relative" formats may just be the thing, i recall the datetime-class being quite powerful ...
http://www.php.net/manual/en/datetime.construct.php
http://www.php.net/manual/en/datetime.formats.relative.php
http://www.php.net/manual/en/datetime.formats.compound.php