public int compareTo(IntervalDayTimeColumnVector intervalDayTimeColVector1, int elementNum1,
      int elementNum2) {
    return intervalDayTimeColVector1.asScratchIntervalDayTime(elementNum1).compareTo(
        asScratchIntervalDayTime(elementNum2));
  }
Compare another TimestampColumnVector's row to a row.
@param intervalDayTimeColVector1
@param elementNum1
@param elementNum2
@return
storage-api/src/java/org/apache/hadoop/hive/ql/exec/vector/IntervalDayTimeColumnVector.java