protected void calcFromStatistics(Statistics timeStatistics, Statistics[] valueStatistics) {
    for (TreeAggregator aggregator : aggregators) {
      if (aggregator.hasFinalResult()) {
        continue;
      }
      aggregator.processStatistics(timeStatistics, valueStatistics);
    }
  }
Return true if we have the result of this timeRange.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/AbstractSeriesAggregationScanOperator.java