You'll need to use createlang to add the handler.
IIRC, it's createlang <lang> <database>
On Tue, 9 Oct 2001, Kevin HaleBoyes wrote:
> I'm creating a function (for use in a trigger) from the example in the
> documentation and encountered an error. If I type the following at
> the psql prompt (database and user are opf):
>
> opf=> create function opf_user_fillin() returns opaque as '
> opf'> begin
> opf'> new.opf_user_id := nextval(opf_user_sequence);
> opf'> return new;
> opf'> end;
> opf'> '
> opf-> language 'plpgsql'
> opf-> ;
>
> I get the following error:
>
> ERROR: Unrecognized language specified in a CREATE FUNCTION: 'plpgsql'.
> Recognized languages are sql, C, internal and the created procedural languages.
>
> Can I enable the plpgsql language on my system? If so, how? If not,
> what are my options (ie, what do I have to do to get plpgsql support)?
>
> I'm pretty new to PostgreSQL but no stranger to compiling systems from source
> (or writing the source for that matter). I'm running a RedHat Linux 7.1 system
> with the PostgreSQL that comes with the OS.