Oracle 中实例详解ROW_NUMBER()用法
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ROW_NUMBER（）语法如下：1、row_number() over(order by column desc)先对列column按照降序，再为每条记录返回一个序列号：SELECT D.*, ROW_NUMBER() OVER(ORDER BY D.R_OPATE_NUM DESC) AS INX FROM REPORT_DATA D
2、row_number() over(partition by column1 order by column2 asc) 先按照column1分组，再对分组后的数据进行以column2升序排列select personalid,ct_smp_type,row_number() over(partition by personalid order by ct_smp_type asc) rn from neogoodsrule 语法1的具体实例：获取前100名人员的排名信息，如下
WITH REPORT_DATA AS (SELECT DW.DWID,DW.DWMC,JY.JYXM,JY.JH,RMPC.R_OPATE_NUM FROM REPORT_MONTH_PERSON_COUNT RMPC,JWT_JYXX JY,T_DWXX DW WHERE RMPC.JYID = JY.JYUSERID AND JY.SSDW = DW.DWID AND RMPC.R_YEAR = 2013 AND RMPC.R_MONTH = 6 AND JY.SSDW LIKE '4102%' ORDER BY RMPC.R_OPATE_NUM DESC)SELECT B.*FROM (SELECT D.*, ROW_NUMBER() OVER(ORDER BY D.R_OPATE_NUM DESC) AS INX FROM REPORT_DATA D ) BWHERE B.INX <=100ORDER BY B.INX
