oracle 找出两表之间非重复数据

select r.rollid as rollid from zh1_rool r where r.date_p >=to_date('2009-11-26 23:59:59','yyyy-mm-dd hh24:mi:ss') and rollid not in(select t.lot_number as rollid from inv.mtl_onhand_quantities_detail t left join mtl_system_items_b mi on t.inventory_item_id = mi.inventory_item_id where mi.segment1 like '101%' and mi.organization_id = 102)