Update trigger syntax

Question

Hi
I would like to create an update trigger that updates 3 collumns in another table.
This works for one collumn:
CREATE OR REPLACE TRIGGER DBNAME.Update_EVENT
BEFORE UPDATE
ON DBNAME.DB_EVENTS
REFERENCING NEW AS NEW OLD AS OLD
FOR EACH ROW
DECLARE
BEGIN
UPDATE DB_EVENT_LOG
SET
COMPLETION_EVENT = :NEW.COMPLETION_EVENT
     WHERE RECORD_ID = :OLD.RECORD_ID ;
EXCEPTION
WHEN OTHERS THEN
-- log the error and re-raise
RAISE;
END ;
but this does not work for multiple collumns:
CREATE OR REPLACE TRIGGER DBNAME.Update_EVENT
BEFORE UPDATE
ON DBNAME.DB_EVENTS
REFERENCING NEW AS NEW OLD AS OLD
FOR EACH ROW
DECLARE
BEGIN
UPDATE DB_EVENT_LOG
SET
(COMPLETION_EVENT
, COMPLETION_DT_TM
, COMPLETED_BY)
=
(:NEW.COMPLETION_EVENT
, :NEW.COMPLETION_DT_TM
, :NEW.COMPLETED_BY)
     WHERE RECORD_ID = :OLD.RECORD_ID ;
EXCEPTION
WHEN OTHERS THEN
-- log the error and re-raise
RAISE;
END ;
What am i doing wrong?

Answer 1

Your update statement isn't correct, it should look like:
UPDATE DB_EVENT_LOG
SET
COMPLETION_EVENT = :NEW.COMPLETION_EVENT,
COMPLETION_DT_TM = :NEW.COMPLETION_DT_TM,
COMPLETED_BY = :NEW.COMPLETED_BY
WHERE RECORD_ID = :OLD.RECORD_ID ;