Definition:
The Oracle PL/SQL function PERCENTILE_DISC is a built in inverse distribution analytic function which works on discrete distribution model to get the median of a column value. It takes a numeric input which is assumed as percentile rank and grouping specification as input. It returns the least value whose percentile is greater than or equal to the given percentile.
Example Syntax:
PERCENTILE_DISC() WITHIN GROUP (ORDER BY NULLS )
OVER ();
Example Usage:
The SQL statement below lists the median salary which is greater than or equal to percentile of 0.5 within each department:
SQL> SELECT EMPNO, DEPTNO, SALARY , PERCENTILE_DISC(0.5)
WITHIN GROUP (ORDER_BY SALARY DESC)
OVER (PARTITION BY DEPTNO) "Percentile_DISC"
FROM EMPLOYEE
Related Links:
Related Code Snippets:
- PERCENTILE_DISC - An inverse distribution function that assumes a discrete distribution model. It ...
