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

VAR_SAMP,VARIANCE_SAMP

Syntax

VAR_SAMP(expr)

Description

返回expr表达式的样本方差

Examples

MySQL > select var_samp(scan_rows) from log_statis group by datetime;
+-----------------------+
| var_samp(`scan_rows`) |
+-----------------------+
|    5.6227132145741789 |
+-----------------------+