VARIANCE_SAMP,VARIANCE_SAMP

Description

Syntax

VAR SAMP (expr)

Returns the sample variance of the expr expression

example

1. MySQL > select var_samp(scan_rows) from log_statis group by datetime;
2. +-----------------------+
3. | var_samp(`scan_rows`) |
4. +-----------------------+
5. |    5.6227132145741789 |
6. +-----------------------+

keywords

VAR SAMP, VARIANCE SAMP,VAR,SAMP,VARIANCE