text: DELETE FROM
     events_extract 
  WHERE
     event_date || '-' || event_id IN 
     (
        SELECT event_date || '-' || event_id
        FROM events_extract 
        GROUP BY
           event_id,
           event_date 
        HAVING
           COUNT(*) > 1
     )
     AND source_file LIKE '%-icews-events-1.tab';
  