Re: SQL doubt - Date Add

Gaetano Mendola wrote:
> sreejith s wrote:
> 
>> Hi friends,
>>               I problem is i want to add a specified no. of years to a
>> given date
>> ie, 12/12/2004 + 5 = 12/12/2009. This has to be done via sql. Any 
>> predefined function there for the same. or v have split the yr and
>> then add.
>> Sreejith
>>
> 
> # select '2004-12-12'::date + 5 * '1 year'::interval;
>       ?column?
> ---------------------
>  2009-12-12 00:00:00
> (1 row)

But be aware of...

richardh=# SELECT '2004-02-28'::date + '1 year'::interval;      ?column?
--------------------- 2005-02-28 00:00:00
(1 row)

richardh=# SELECT '2004-02-29'::date + '1 year'::interval;      ?column?
--------------------- 2005-02-28 00:00:00
(1 row)

richardh=# SELECT '2004-02-29'::date + '4 years'::interval;      ?column?
--------------------- 2008-02-29 00:00:00
(1 row)

--   Richard Huxton  Archonet Ltd