docs: def filter(self, table, column_slice=None):
          """
          Use the current Query object to create a mask (a boolean array)
          for `table`.
  
          Parameters
          ----------
          table : NumPy structured array, astropy Table, etc.
          column_slice : Column to return. Default is None (return all columns).
  
          Returns
          -------
          table : filtered table
          """
          if self._operator is None and self._operands is None:
              return table if column_slice is None else self._get_table_column(table, column_slice)
  
          if self._operator == 'AND' and column_slice is None:
              for op in self._operands:
                  table = op.filter(table)
              return table
  
          return self._mask_table(
              table if column_slice is None else self._get_table_column(table, column_slice),
              self.mask(table)
          )