VAR_SAMP()

Overview

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

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, VAR_SAMP(b) AS var_b
FROM t1 GROUP BY a ORDER BY a;
+------+---------+
| a    | var_b   |
+------+---------+
|    1 |  2.0000 |
|    2 |    NULL |
|    3 |  0.0000 |
|    4 |    NULL |
|    5 |  0.5000 |
|    6 |    NULL |
|    7 |  4.5000 |
|    8 |    NULL |
|    9 | 12.5000 |
|   10 |    NULL |
+------+---------+

As Window Function

SELECT a, VAR_SAMP(a) OVER (PARTITION BY b) AS var_samp_a
 FROM t1
 GROUP BY a
 ORDER BY a;
+------+------------+
| a    | var_samp_a |
+------+------------+
|    1 |       NULL |
|    2 |       NULL |
|    3 |       NULL |
|    4 |       NULL |
|    5 |       NULL |
|    6 |       NULL |
|    7 |     0.5000 |
|    8 |     0.5000 |
|    9 |       NULL |
|   10 |       NULL |
+------+------------+

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