Great !!! COALESCE() does the job for me.
( BTW, replacing "SQL" by "PLPGSQL " still gets the same error ..... )
Thanks a lot Alvaro !!!
On Wed, May 14, 2008 at 4:36 PM, Alvaro Herrera <
alvherre@commandprompt.com> wrote:
Premil Agarwal escribió:
> I am trying to write a function in PgAdmin 1.8.2 for postgres 8.3. The
> function should check the input parameter for NULL. If its NULL then
> function should return 'Auto' otherwise return the input as such.
>
> CREATE FUNCTION check_for_null( inp character varying) RETURNS character
> varying AS $$
[...]
> $$ LANGUAGE SQL;
^^^
There's your problem. Try using PLPGSQL instead.
In any case, you can do this with COALESCE() and it's much easier.
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.