Aggregator finding a minimum
Subjects are compared and the smallest one is the result of the aggregation.
An error is thrown if any subject is non-numeric and not nil
If no subjects are processed, the aggregation result is nil
Defines how to handle nil values:
Defines how to handle NaN values:
This expression evaluates to a dict of the form:
The supplied values are consistent with aggregation semantics of the Group By step.