--
-- content_keyword__get_heading/1
--
create or replace function content_keyword__get_heading(
  integer
) returns text as $$

declare
  get_heading__keyword_id             alias for $1;  
  v_heading                           text; 
begin

  select heading into v_heading from cr_keywords
    where keyword_id = get_heading__keyword_id;

  return v_heading;
 
end;$$ language plpgsql;