code: def count(self):
          
          if self._batch:
              raise CQLEngineException("Only inserts, updates, and deletes are available in batch mode")
  
          if self._count is None:
              query = self._select_query()
              query.count = True
              result = self._execute(query)
              count_row = result.one().popitem()
              self._count = count_row[1]
          return self._count
docs: Returns the number of rows matched by this query.
  
          *Note: This function executes a SELECT COUNT() and has a performance cost on large datasets*