an aggregator that calculates the average of the input values. Does NOT accept null input values. Accepts only Integer input values (primitive and boxed). Aggregation result type is number.
null
number
Optional
extracts values from this path if given
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Returns
an aggregator that calculates the average of the input values. Does NOT accept
nullinput values. Accepts only Integer input values (primitive and boxed). Aggregation result type isnumber.