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VAR_SAMP,VARIANCE_SAMP

description

Syntax

VAR_SAMP(expr)

It returns the sample variance of the expr expression.

example

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

keyword

VAR_SAMP,VARIANCE_SAMP,VAR,SAMP,VARIANCE