On Tue, 14 Aug 2001, Bill wrote:
> Hello all,
>
> I am a newbie to postgreSQL, is it possible to write a "DateDiff",
> "IsNull" function work same as the one in SQL Server and are there and
> sample out there? And is it possible to override the existing function and
> operator like "+" to become a concate?
I don't know what IsNull does but:
template1=> select coalesce(NULL, 'Hello');case
-------Hello
(1 row)
I do know what DateDiff does:
template1=> select '2001-08-14'::date - '6 weeks'::interval; ?column?
------------------------2001-07-03 00:00:00-05
(1 row)
Overloading operators? *Please* tell me that this is impossible.
Alan Gutierrez
