code: public static Object createBlob(Connection conn) throws MjdbcSQLException {
          Object result = null;
  
          try {
              result = MappingUtils.invokeFunction(conn, "createBlob", new Class[]{}, new Object[]{});
          } catch (MjdbcException ex) {
              throw new MjdbcSQLException("createBlob is not supported by JDBC Driver", ex);
          }
  
          return result;
      }
docs: Creates new {@link java.sql.Blob} instance.
  Can be invoked only for JDBC4 driver
  
  @param conn SQL connection
  @return new {@link java.sql.Blob} instance
  @throws org.midao.jdbc.core.exception.MjdbcSQLException