Havin' a bad day.........

What's wrong with this

UPDATE PHILTEST SET TYPE =
CASE DATE1
WHEN '05-NOV-03' THEN 'CR'
WHEN '01-DEC-03' THEN 'TN'
WHEN '01-JAN-04' THEN 'RV'
END CASE;
END CASE
*
ERROR at line 6:
ORA-00933: SQL command not properly ended