How can i view the source code of existing stored procedure in vertica?

EXPORT_OBJECTS will show the CREATE statement:

d2=> select export_objects('','raiseXY');

export_objects

CREATE PROCEDURE public.raiseXY(x int, y varchar)
LANGUAGE 'PL/vSQL'
SECURITY INVOKER
AS '
BEGIN
RAISE NOTICE ''x = %'', x;
RAISE NOTICE ''y = %'', y;
-- some processing statements
END;
';

Thank you very much! You helped me a lot!