% endfor %}]
                        for (let i of result) {
                            let instance = "<option value=\"" + i.instance_name + "\" instance-id=" + i.id + ">" + i.instance_name + "</option>";
                            if (supportDb.indexOf(i.db_type) !== -1) {
                                $("#optgroup-" + i.db_type).append(instance);
                            }
                        }
                        $('#instance_name').selectpicker('render').selectpicker('refresh');
        