code: public boolean renameColumn (Connection conn, String table, String from, String to,
                                   ColumnDefinition newColumnDef) throws SQLException
      {
          executeQuery(conn, "ALTER TABLE " + tableSQL(table) + " RENAME COLUMN " +
                       columnSQL(from) + " TO " + columnSQL(to));
          log("Renamed column '" + from + "' on table '" + table + "' to '" + to + "'");
          return true;
      }
docs: from DatabaseLiaison