STDDEV_POP()

Overview

A description for this Function has not yet been added to this Documentation.

See also: Functions in 10.6 ES, in 10.6 CS, in 10.5 ES, in 10.5 CS, in 10.4 ES, in 10.4 CS, in 10.3 ES, in 10.3 CS, in 10.2 ES, and in 10.2 CS

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 b, STDDEV_POP(a) AS std_a
FROM t1 GROUP BY b ORDER BY b;
+------+--------+
| b    | std_a  |
+------+--------+
|    1 | 0.0000 |
|    2 | 0.5000 |
|    3 | 0.0000 |
|    4 | 0.0000 |
|    5 | 3.3993 |
|    6 | 1.5000 |
|    7 | 0.0000 |
|    8 | 0.0000 |
|    9 | 0.0000 |
|   10 | 0.0000 |
+------+--------+

As Window Function

SELECT a, b,
       STDDEV_POP(a) OVER () AS stddev_a,
       STDDEV_POP(b) OVER () AS stddev_b
FROM t1 ORDER BY a, b;
+------+------+----------+----------+
| a    | b    | stddev_a | stddev_b |
+------+------+----------+----------+
|    1 |    3 |   2.8674 |   2.6800 |
|    1 |    5 |   2.8674 |   2.6800 |
|    2 |    6 |   2.8674 |   2.6800 |
|    3 |    9 |   2.8674 |   2.6800 |
|    3 |    9 |   2.8674 |   2.6800 |
|    4 |    8 |   2.8674 |   2.6800 |
|    5 |    6 |   2.8674 |   2.6800 |
|    5 |    7 |   2.8674 |   2.6800 |
|    6 |    4 |   2.8674 |   2.6800 |
|    7 |    2 |   2.8674 |   2.6800 |
|    7 |    5 |   2.8674 |   2.6800 |
|    8 |    2 |   2.8674 |   2.6800 |
|    9 |    5 |   2.8674 |   2.6800 |
|    9 |   10 |   2.8674 |   2.6800 |
|   10 |    1 |   2.8674 |   2.6800 |
+------+------+----------+----------+

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.

EXTERNAL REFERENCES