LinuxQuestions.org - PL/pgSQL anyone?

good day to all.

im installing plpgsql to my postgres database but i have encountered some error.
here's what i did to my interactive postgres terminal:

Code:

polmap=# CREATE FUNCTION plpgsql_call_handler () RETURNS language_handler

polmap--#      AS '$libdir/plpgsql', 'plpgsql_call_handler'

polmap--#      LANGUAGE C;

NOTICE:    ProcedureCreate:  type language_handler is not yet defined

(waiting for sometime.. )

CREATE FUNCTION



polmap=# CREATE TRUSTED PROCEDURAL LANGUAGE 'plpgsql' HANDLER plpgsql_call_handler

polmap--#      LANCOMPILER 'PL/pgSQL';

ERROR:    CreateProceduralLanguage:    function plpgsql_call_handler must call LANGUAGE_HANDLER

i dont know what this mean. can any body help me how to correct and solve my problem?
thanks in advance..