STDDEV_SAMP

STDDEV_SAMP

Description

Syntax

STDDEV SAMP (expr)

Returns the sample standard deviation of the expr expression

example

MySQL > select stddev_samp(scan_rows) from log_statis group by datetime;
+--------------------------+
| stddev_samp(`scan_rows`) |
+--------------------------+
|        2.372044195280762 |
+--------------------------+

keywords

STDDEV SAMP,STDDEV,SAMP