21.11.3.6
```
cat /etc/clickhouse-server/node.tsv
1,test

cat /etc/clickhouse-server/node_dictionary.xml
<dictionaries>
    <dictionary>
        <name>node</name>
        <source>
            <file>
                <path>/etc/clickhouse-server/node.tsv</path>
                <format>CSV</format>
            </file>
        </source>
        <lifetime>0</lifetime>
        <layout><flat /></layout>
        <structure>
            <id><name>key</name></id>
            <attribute>
                <name>name</name>
                <type>String</type>
                <null_value></null_value>
            </attribute>
        </structure>
    </dictionary>
</dictionaries>

create table default.node ( key UInt64, name String ) Engine=Dictionary(node);

select * from default.node;
┌─key─┬─name─┐
│   1 │ test │
└─────┴──────┘

/etc/init.d/clickhouse-server restart

<Error> Application: DB::Exception: Cannot attach 1 tables due to cyclic dependencies. See server log for details.
<Information> Application: shutting down
```
drop_ast->setTable(create.getTable());
                drop_ast->no_ddl_lock = true;
                auto drop_context = Context::createCopy(context);
                InterpreterDropQuery interpreter(drop_ast, drop_context);
                interpreter.execute();
            }
            else
                throw Exception(storage_already_exists_error_code,
                    "{} {}.{} already exists", storage_name, backQuoteIfNeed(create.getDatabase()), backQuoteIfNeed(create.getTable()));
        }
        data_path = database->getTableDataPath(create);
        if (!create.attach && !data_path.empty() && fs::exists(fs::path{getContext()->getPath()} / data_path))
            throw Exception(storage_already_exists_error_code,
                "Directory for {} data {} already exists", Poco::toLower(storage_name), String(data_path));
    }
    else
    {
        if (create.if_not_exists && getContext()->tryResolveStorageID({"", create.getTable()}, Context::ResolveExternal))
            return false;
        String temporary_table_name = create.getTable();
        auto temporary_table = TemporaryTableHolder(getContext(), properties.columns, properties.constraints, query_ptr);
        getContext()->getSessionContext()->addExternalTable(temporary_table_name, std::move(temporary_table));
        return true;
    }
    bool from_path = create.attach_from_path.has_value();
    String actual_data_path = data_path;
    if (from_path)
    {
        if (data_path.empty())
            throw Exception(ErrorCodes::NOT_IMPLEMENTED,