CUME_DIST()

Overview

Returns the cumulative distribution of the given row.

EXAMPLES

CREATE TABLE t1 (a INT, b INT);
INSERT INTO t1 VALUES
  (1,3), (1,5), (8,2), (5,7), (5,6),
  (10,1), (6,4), (3,9), (3,9), (7,2),
  (7,5), (2,6), (9,10), (9,5), (4,8);
SELECT a, b, CUME_DIST() OVER w AS 'cume_dist'
FROM t1 WINDOW w AS (ORDER BY a, b);
+------+------+--------------+
| a    | b    | cume_dist    |
+------+------+--------------+
|    1 |    3 | 0.0666666667 |
|    1 |    5 | 0.1333333333 |
|    2 |    6 | 0.2000000000 |
|    3 |    9 | 0.3333333333 |
|    3 |    9 | 0.3333333333 |
|    4 |    8 | 0.4000000000 |
|    5 |    6 | 0.4666666667 |
|    5 |    7 | 0.5333333333 |
|    6 |    4 | 0.6000000000 |
|    7 |    2 | 0.6666666667 |
|    7 |    5 | 0.7333333333 |
|    8 |    2 | 0.8000000000 |
|    9 |    5 | 0.8666666667 |
|    9 |   10 | 0.9333333333 |
|   10 |    1 | 1.0000000000 |
+------+------+--------------+

CHANGE HISTORY

Release Series

History

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

10.6 Community

  • Present starting in MariaDB Community Server 10.6.0.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.5 Community

  • Present starting in MariaDB Community Server 10.5.0.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

10.4 Community

  • Present starting in MariaDB Community Server 10.4.0.

10.3 Enterprise

  • Present starting in MariaDB Enterprise Server 10.3.16-1.

10.3 Community

  • Present starting in MariaDB Community Server 10.3.0.

10.2 Enterprise

  • Present starting in MariaDB Enterprise Server 10.2.25-1.

10.2 Community

  • Present starting in MariaDB Community Server 10.2.0.

Release Series

History

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

EXTERNAL REFERENCES