STDDEV()
This page is part of MariaDB's Enterprise Documentation.
The parent of this page is: Functions
Topics on this page:
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 t (a INT, b INT);
INSERT INTO t VALUES
(1,5), (8,2), (5,6), (3,9), (3,9),
(7,2), (7,5), (2,6), (9,5);
SELECT b, STDDEV(a) FROM t GROUP BY b ORDER BY b;
+------+-----------+
| b | STDDEV(a) |
+------+-----------+
| 2 | 0.5000 |
| 5 | 3.3993 |
| 6 | 1.5000 |
| 9 | 0.0000 |
+------+-----------+
As Window Function
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(a) OVER () AS stddev_a
FROM t1
GROUP BY b
ORDER BY b;
+------+----------+
| b | stddev_a |
+------+----------+
| 1 | 2.9597 |
| 2 | 2.9597 |
| 3 | 2.9597 |
| 4 | 2.9597 |
| 5 | 2.9597 |
| 6 | 2.9597 |
| 7 | 2.9597 |
| 8 | 2.9597 |
| 9 | 2.9597 |
| 10 | 2.9597 |
+------+----------+
CHANGE HISTORY
Release Series | History |
---|---|
10.6 Enterprise |
|
10.6 Community |
|
10.5 Enterprise |
|
10.5 Community |
|
10.4 Enterprise |
|
10.4 Community |
|
10.3 Enterprise |
|
10.3 Community |
|
10.2 Enterprise |
|
10.2 Community |
|
EXTERNAL REFERENCES
Additional information on this topic may be found in the MariaDB Public Knowledge Base.
Information specific to MariaDB SkySQL can be found on the STDDEV() page in the SkySQL Documentation.