 (select * from items where category_id=0 order by add_date desc limit 0) union (select * from items where category_id=0 order by add_date desc limit 0) union (select * from items where category_id=0 order by add_date desc limit 0) union (select * from items where category_id=0 order by add_date desc limit 0) union (select * from items where category_id=0 order by add_date desc limit 0)