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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​

variance_pop( <expr>)

Arguments​

<expr>​

An expression that evaluates to a numeric value. This is the expression on which the variance is calculated.

Returns​

The data type of the returned value is float.

If all records inside a group are NULL, this function returns NULL.

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