Hypothetical Rank and Distribution Functions
The hypothetical rank and distribution functions calculates the rank and percentile that a new row would have if you inserted it into a table.
The hypothetical function can work with: RANK(), DENSE_RANK(), PERCENT_RANK(), and CUME_DIST().
The next query shows the hypothetical rank and percent rank of a salary amount of $5000:
CREATE TABLE EMP (EMPNO NUMBER(4) NOT NULL,
ENAME VARCHAR2(10),
JOB VARCHAR2(9),
SAL NUMBER(7, 2),
DEPTNO NUMBER(2));
INSERT INTO EMP VALUES (1, 'SMITH', 'CLERK', 800, 20);
INSERT INTO EMP VALUES (2, 'ALLEN', 'SALESMAN', 1600, 30);
INSERT INTO EMP VALUES (3, 'WARD', 'SALESMAN', 1250, 30);
INSERT INTO EMP VALUES (4, 'JONES', 'MANAGER', 2975, 20);
INSERT INTO EMP VALUES (5, 'MARTIN','SALESMAN', 1250, 30);
INSERT INTO EMP VALUES (6, 'BLAKE', 'MANAGER', 2850, 30);
INSERT INTO EMP VALUES (7, 'CLARK', 'MANAGER', 2850, 10);
INSERT INTO EMP VALUES (8, 'SCOTT', 'ANALYST', 3000, 20);
INSERT INTO EMP VALUES (9, 'KING', 'PRESIDENT',3000, 10);
INSERT INTO EMP VALUES (10,'TURNER','SALESMAN', 1500, 30);
INSERT INTO EMP VALUES (11,'ADAMS', 'CLERK', 1500, 20);
SQL> SELECT RANK(5000) WITHIN GROUP (ORDER BY SUM(sal) DESC) AS rank,
2 PERCENT_RANK(5000) WITHIN GROUP (ORDER BY SUM(sal) DESC) AS percent_rank
3 FROM emp
4 GROUP BY deptno
5 ORDER BY deptno;
RANK PERCENT_RANK
---------- ------------
4 1
SQL>