(self, query)
Return estimated number of rows returned by query.

        Parameters
        ----------
        query : str

        Returns
        -------
        Approximate number of rows
Return estimated number of rows returned by query.
Return estimated number of rows returned by query .
def count_approx(self, query):
        """Return estimated number of rows returned by query.

        Parameters
        ----------
        query : str

        Returns
        -------
        Approximate number of rows
        """
        raise NotImplementedError
def count_approx ( self , query ) : raise NotImplementedError