Oracle SQL - RATIO_TO_REPORT in Partition


The RATIO_TO_REPORT (and the SUM analytical function) can easily be Partitioned as well. For example:


SQL> drop table emp;

Table dropped.--   ww  w  .j  a v a2s  .com

SQL> create table emp(
  2  empno        Number(3)  NOT NULL,
  3  ename        VARCHAR2(10 BYTE),
  4  hireDate     DATE,
  5  orig_salary  Number(8,2),
  6  curr_salary  Number(8,2),
  7  region       VARCHAR2(1 BYTE)
  8  );
SQL> insert into emp values(1,'Alison',DATE '1996-03-21', 45000, NULL,  'E');
SQL> insert into emp values(2,'James',DATE  '1978-12-12', 23000, 32000, 'W');
SQL> insert into emp values(3,'Celia',DATE  '1982-10-24', NULL,  58000, 'E');
SQL> insert into emp values(4,'Robert',DATE '1984-01-15', 31000, NULL,  'W');
SQL> insert into emp values(5,'Linda',DATE  '1987-07-30', NULL,  53000, 'E');
SQL> insert into emp values(6,'David',DATE  '1990-12-31', 78000, NULL,  'W');
SQL> insert into emp values(7,'Jode',DATE  '1996-09-17', 21000, 29000, 'E');
SQL> SELECT ename, curr_salary, region,
  2  curr_salary/SUM(curr_salary) OVER(PARTITION BY Region)
  3       Portion,
  4  RATIO_TO_REPORT(curr_salary) OVER(PARTITION BY Region)
  5       Portion2
  6  FROM emp
  7  ORDER BY region, curr_salary

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