# File lib/paranoia.rb, line 30
    def only_deleted
      if paranoia_sentinel_value.nil?
        return with_deleted.where.not(paranoia_column => paranoia_sentinel_value)
      end
      # if paranoia_sentinel_value is not null, then it is possible that
      # some deleted rows will hold a null value in the paranoia column
      # these will not match != sentinel value because "NULL != value" is
      # NULL under the sql standard
      quoted_paranoia_column = connection.quote_column_name(paranoia_column)
      with_deleted.where("#{quoted_paranoia_column} IS NULL OR #{quoted_paranoia_column} != ?", paranoia_sentinel_value)
    end