VAR_POP

VAR_POP([ALL] expr) OVER over_clause

obclient> CREATE TABLE EMPLOYEES (MANAGER_ID INT,LAST_NAME VARCHAR(50),HIREDATE VARCHAR(50),SALARY INT);
INSERT INTO EMPLOYEES VALUES(100, 'RAPHAELY', '2017-07-01', 1700);
INSERT INTO EMPLOYEES VALUES(100, 'DE HAAN', '2018-05-01',11000);      
INSERT INTO EMPLOYEES VALUES(100, 'ERRAZURIZ', '2017-07-21', 1400);
INSERT INTO EMPLOYEES VALUES(100, 'HARTSTEIN', '2019-05-01',14000);     
INSERT INTO EMPLOYEES VALUES(100, 'RAPHAELY', '2017-07-22', 1700);
INSERT INTO EMPLOYEES VALUES(100, 'WEISS',  '2019-07-11',13500);     
INSERT INTO EMPLOYEES VALUES(100, 'RUSSELL', '2019-10-05', 13000);
INSERT INTO EMPLOYEES VALUES(100, 'PARTNERS',  '2018-12-01',14000);     
INSERT INTO EMPLOYEES VALUES(200, 'ROSS',  '2019-06-11',13500);     
INSERT INTO EMPLOYEES VALUES(200, 'BELL', '2019-05-25', 13000);
INSERT INTO EMPLOYEES VALUES(200, 'PART',  '2018-08-11',14000);   
COMMIT;

obclient> SELECT LAST_NAME,SALARY,VAR_POP(SALARY) OVER(ORDER BY HIREDATE) AS DEVISION FROM EMPLOYEES WHERE MANAGER_ID = 100;
+-----------+--------+-------------------+
 LAST_NAME  SALARY  DEVISION          
+-----------+--------+-------------------+
 RAPHAELY     1700                  0 
 ERRAZURIZ    1400              22500 
 RAPHAELY     1700              20000 
 DE HAAN     11000           16582500 
 PARTNERS    14000           29426400 
 HARTSTEIN   14000           33500000 
 WEISS       13500  33421224.48979592 
 RUSSELL     13000        31778593.75 
+-----------+--------+-------------------+
8 rows in set (0.00 sec)