如何查询当前年最新的数据以及这条数据的上一年的最新数据？

SELECT 
ORG_NO,
利润总额,
NVL(LAG(a.利润总额) OVER (PARTITION BY a.ORG_NO ORDER BY a.数据日期 DESC),0) AS 上年利润总额,
数据日期 
FROM(
SELECT ROW_NUMBER() OVER(PARTITION BY TO_CHAR(DATA_TIME, 'YYYY') 
ORDER BY DATA_TIME DESC, STAT_TIME DESC) rn,
          ORG_NO,
          --当前年最新利润总额
          NVL(TOTAL_PROFIT,0) AS 利润总额,
          TO_CHAR(DATA_TIME,'YYYY-MM-DD') AS 数据日期 
          FROM BRAIN.DWS_MANAGE_PROFIT
 )a   WHERE a.rn = 1