code: @Override
      public Clob getClob(int columnIndex) throws SQLException {
          checkColumnBounds(columnIndex);
          try {
              return new SerialClob(table.getString(columnIndex - 1)
                      .toCharArray());
          } catch (Exception x) {
              throw SQLError.get(x);
          }
      }
docs: ResultSet object as a Clob object in the Java programming language.