doris/docs/documentation/cn/sql-reference/sql-functions/aggregate-functions/stddev_samp.md

STDDEV_SAMP

description

Syntax

STDDEV_SAMP(expr)

返回expr表达式的样本标准差

example

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

##keyword STDDEV_SAMP,STDDEV,SAMP