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