PARTITION BY, order by and 'range unbounded preceding' : RANGE « Analytical Functions « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » Analytical Functions » RANGE 
16. 23. 4. PARTITION BY, order by and 'range unbounded preceding'
SQL>
SQL>
SQL> create table employees(
  2    empno      NUMBER(4)
  3  , ename      VARCHAR2(8)
  4  , init       VARCHAR2(5)
  5  , job        VARCHAR2(8)
  6  , mgr        NUMBER(4)
  7  , bdate      DATE
  8  , msal       NUMBER(6,2)
  9  , comm       NUMBER(6,2)
 10  , deptno     NUMBER(2) ) ;

Table created.

SQL>
SQL>
SQL> insert into employees values(1,'Jason',  'N',  'TRAINER', 2,   date '1965-12-18',  800 , NULL,  10);

row created.

SQL> insert into employees values(2,'Jerry',  'J',  'SALESREP',3,   date '1966-11-19',  1600300,   10);

row created.

SQL> insert into employees values(3,'Jord',   'T' 'SALESREP',4,   date '1967-10-21',  1700500,   20);

row created.

SQL> insert into employees values(4,'Mary',   'J',  'MANAGER', 5,   date '1968-09-22',  1800, NULL,  20);

row created.

SQL> insert into employees values(5,'Joe',    'P',  'SALESREP',6,   date '1969-08-23',  19001400,  30);

row created.

SQL> insert into employees values(6,'Black',  'R',  'MANAGER', 7,   date '1970-07-24',  2000, NULL,  30);

row created.

SQL> insert into employees values(7,'Red',    'A',  'MANAGER', 8,   date '1971-06-25',  2100, NULL,  40);

row created.

SQL> insert into employees values(8,'White',  'S',  'TRAINER', 9,   date '1972-05-26',  2200, NULL,  40);

row created.

SQL> insert into employees values(9,'Yellow', 'C',  'DIRECTOR',10,  date '1973-04-27',  2300, NULL,  20);

row created.

SQL> insert into employees values(10,'Pink',  'J',  'SALESREP',null,date '1974-03-28',  24000,     30);

row created.

SQL>
SQL>
SQL>
SQL> break on mgr
SQL>
SQL> select mgr, ename, msal
  2  ,      sum(msalover
  3         PARTITION BY mgr
  4           order by mgr, msal, empno
  5           range unbounded preceding
  6         as cumulative
  7  from   employees
  8  order  by mgr, msal;

   MGR      last_name         MSAL CUMULATIVE
------ -------------------- ------ ----------
     Jason                   800        800
     Jerry                  1600       1600
     Jord                   1700       1700
     Mary                   1800       1800
     Joe                    1900       1900
     Black                  2000       2000
     Red                    2100       2100
     White                  2200       2200
    10 Yellow                 2300       2300
null   Pink                   2400       2400

10 rows selected.

SQL>
SQL> clear breaks
breaks cleared
SQL>
SQL> drop table employees;

Table dropped.

SQL>
SQL>
16. 23. RANGE
16. 23. 1. A seven-day MAX and MIN on Tuesdays
16. 23. 2. Order by range unbounded preceding
16. 23. 3. Sum with Order by range unbounded preceding
16. 23. 4. PARTITION BY, order by and 'range unbounded preceding'
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