code: public java.io.InputStream getAsciiStream(
              String columnLabel) throws SQLException {
          return getAsciiStream(findColumn(columnLabel));
      }
docs: <!-- start generic documentation -->
  Retrieves the value of the designated column in the current row
  of this <code>ResultSet</code> object as a stream of
  ASCII characters. The value can then be read in chunks from the
  stream. This method is particularly
  suitable for retrieving large <code>LONGVARCHAR</code> values.
  The JDBC driver will
  do any necessary conversion from the database format into ASCII.
  
  <P><B>Note:</B> All the data in the returned stream must be
  read prior to getting the value of any other column. The next
  call to a getter method implicitly closes the stream. Also, a
  stream may return <code>0</code> when the method <code>available</code>
  is called whether there is data available or not.
  <!-- end generic documentation -->
  
  @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the label is the name of the column
  @return a Java input stream that delivers the database column value
  as a stream of one-byte ASCII characters.
  If the value is SQL <code>NULL</code>,
  the value returned is <code>null</code>.
  @exception SQLException if a database access error occurs or this method is
  called on a closed result set
  @see #getAsciiStream(int)