Name
STDDEV_SAMP — Returns the cumulative sample standard deviation.
Synopsis
numeric
STDDEV_SAMP
(
|
in
expr
any
); |
Description
STDDEV_SAMP computes the cumulative sample standard deviation and returns the square root of the sample variance. The expr is a numeric expression, and the function returns a value of type NUMERIC. This function is same as the square root of the VAR_SAMP function. When VAR_SAMP returns null, this function returns null.
Parameters
expr
Number expression.
Return Types
The function returns a value of type NUMERIC. If the function is applied to an empty set, then it returns null.