Name

STDDEV — Returns the standard deviation.

Synopsis

numeric STDDEV ( in expr1 any ,
in expr2 any );

Description

STDDEV returns standard deviation. It returns STDDEV_SAMP if the number of pairs is more than one, or NULL.

Parameters

expr1

Number expression.

expr2

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.