Manual:Upgrading Postgres/tsearch83triggers

These are the commands that need to be run on each database that is going from Postgres 8.1 or 8.2 to version 8.3 or higher. See the Upgrading Postgres page for the full details.

CREATE OR REPLACE FUNCTION ts2_page_title()
RETURNS TRIGGER
LANGUAGE plpgsql AS
$mw$
BEGIN
IF TG_OP = 'INSERT' THEN
  NEW.titlevector = to_tsvector(REPLACE(NEW.page_title,'/',' '));
ELSIF NEW.page_title != OLD.page_title THEN
  NEW.titlevector := to_tsvector(REPLACE(NEW.page_title,'/',' '));
END IF;
RETURN NEW;
END;
$mw$;

CREATE OR REPLACE FUNCTION ts2_page_text()
RETURNS TRIGGER
LANGUAGE plpgsql AS
$mw$
BEGIN
IF TG_OP = 'INSERT' THEN
  NEW.textvector = to_tsvector(NEW.old_text);
ELSIF NEW.old_text != OLD.old_text THEN
  NEW.textvector := to_tsvector(NEW.old_text);
END IF;
RETURN NEW;
END;
$mw$;