sqlserver 或者 oracle 查询每科成绩前三名问题

SELECT * FROM  (SELECT [PK_EVENT_REPORT_ID]
,[FK_REPORT_FLOW_ID]
,[EVENT_REPORT_KIND]
,[EVENT_REPORT_TYPE]
,[EVENT_REPORT_ORG]
,[EVENT_REPORT_NUMBER]
,DENSE_RANK() OVER(partition by EVENT_REPORT_ORG ORDER BY [EVENT_REPORT_SUMIT_DATE] DESC) AS ROWNUM1
FROM [GCSDB_2].[dbo].[EVENT_REPORTS] ) TT WHERE ROWNUM1<2

select * from (
select  t.*,row_number() over(partition by t.subject_no order by t.score desc) pm from score t) where pm<4;

oracle是用row_number 来加编号的