SQL:
SELECT n.nid, n.group_id, n.uid, n.headline, n.content, n.active, n.create_date, n.teaser, u.last_name, n.writer, u.first_name, u.last_name FROM news_items as n LEFT JOIN system_users as u ON (u.uid = n.uid) WHERE n.nid > 0 AND n.active='true' ORDER BY n.create_date DESC, n.nid DESC LIMIT 1