ClickHouse/tests/integration/test_mask_sensitive_info/configs/named_collections.xml

<clickhouse>
    <named_collections>
        <named_collection_1/>
        <named_collection_2/>
        <named_collection_3>
            <user>user</user>
            <password>pass</password>
        </named_collection_3>
        <named_collection_4>
            <host></host>
        </named_collection_4>
        <named_collection_5>
            <host></host>
        </named_collection_5>
        <named_collection_6/>
    </named_collections>
</clickhouse>