출처 : http://blog.naver.com/PostView.nhn?blogId=sunye79&logNo=60057090475&redirect=Dlog&widgetTypeCall=true
1. 순번출력
SELECT ROW_NUMBER() OVER(ORDER BY 컬럼명1) AS 순번
,컬럼명2
,컬럼명3
FROM 테이블명
2. 그룹별 순위출력
SELECT ROW_NUMBER() OVER(PARTITION BY 컬럼1 ORDER BY COLUMN2) AS 순번
,컬럼명1
,컬럼명2
FROM 테이블명