oracle 10g 裏面有scott用戶

alter user scott account unlock ;

使用 scott 密碼 tiger 進入，修改密碼，改用戶有emp 表；

rank函數 ：

SELECT deptno, job, SUM(sal),
RANK() OVER(PARTITION BY deptno ORDER BY
SUM(sal) DESC)
AS jobdep_rank,RANK() OVER(ORDER BY SUM(sal) DESC) AS sumsal_rank
FROM emp
GROUP BY deptno, job ;

cume_dist

SELECT deptno, job, SUM(sal),
CUME_DIST() OVER(PARTITION BY deptno ORDER BY
SUM(sal) DESC)
AS cume_dist_per_dep
FROM emp
GROUP BY deptno, job
ORDER BY deptno, SUM(sal);

有了這兩個有用的函數，排名和百分比很快就能得到了吧。

oracle很有用的統計函數rank和cume