mysql 语句练习

     SELECT * FROM (
                     
                              SELECT bb.* FROM  (SELECT dt.action_id, dt.order_id, oa2.shipping_status FROM   (
                     
                    SELECT oa.* FROM t_order_action oa WHERE
                        oa.log_time >= UNIX_TIMESTAMP('2012-01-09 00:00:00') - (3600 * 8)
                        AND oa.log_time < UNIX_TIMESTAMP('2012-01-10 00:00:00')- (3600 * 8)  
                    AND action_note LIKE '%分配给1110%'
                    GROUP BY oa.order_id ) AS dt
                    
                    JOIN t_order_action oa2 ON oa2.order_id = dt.order_id  ORDER BY oa2.action_id DESC )  AS bb
                    GROUP BY bb.order_id ) AS cc
                WHERE cc.shipping_status = 13