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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
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