Oracle 去重后排序

Oracle 去重后排序 　　因项目需求，需要将查询结果，去重后，在按照主键(自增列)排序，百度一番，记录下来

DEMO

 SELECT * FROM (SELECT ROW_NUMBER() OVER(PARTITION BY STATION_NAME ORDER BY ID DESC) RNO,STATION_NAME,ID FROM  EMES_MAC) WHERE RNO= ORDER BY ID DESC

 格式:SELECT * FROM (SELECT ROW_NUMBER() OVER(PARTITION BY 去重字段 ORDER BY 排序字段 DESC) RNO,去重字段,排序字段 FROM  表名) WHERE RNO= ORDER BY 排序字段 DESC