variance_pop
Returns the population variance of non-NULL records in a group. If all records inside a group are NULL, a NULL is returned.
Syntax
Section titled “Syntax”variance_pop( <expr>)Arguments
Section titled “Arguments”<expr>
Section titled “<expr>”An expression that evaluates to a numeric value. This is the expression on which the variance is calculated.
Returns
Section titled “Returns”The data type of the returned value is float.
If all records inside a group are NULL, this function returns NULL.