ClickHouse/tests/integration/test_select_access_rights/configs/another_user.xml

<clickhouse>
    <users>
        <another>
            <password/>
            <networks>
                <ip>::/0</ip>
            </networks>
            <profile>default</profile>
            <quota>default</quota>
            <allow_databases>
                <database>mydb</database>
            </allow_databases>
        </another>
    </users>
</clickhouse>