Determine if any rows exist for the current query.

        :return: Whether the rows exist or not
        :rtype: bool

def exists(self):
        """
        Determine if any rows exist for the current query.

        :return: Whether the rows exist or not
        :rtype: bool
        """
        limit = self.limit_

        result = self.limit(1).count() > 0

        self.limit(limit)

        return result