code: protected PreparedStatement prepareStatement(Connection conn, String sql)
          throws SQLException {
  
          return conn.prepareStatement(sql);
      }
docs: Factory method that creates and initializes a
  <code>PreparedStatement</code> object for the given SQL.
  <code>QueryRunner</code> methods always call this method to prepare
  statements for them.  Subclasses can override this method to provide
  special PreparedStatement configuration if needed.  This implementation
  simply calls <code>conn.prepareStatement(sql)</code>.
  
  @param conn The <code>Connection</code> used to create the
  <code>PreparedStatement</code>
  @param sql The SQL statement to prepare.
  @return An initialized <code>PreparedStatement</code>.
  @throws java.sql.SQLException if a database access error occurs