Clickhouse version 21.10.6.2,21.10.5.3 and lower:
```
CREATE TABLE repro (
`id` UInt64,
`version` UInt16,
`conversations.id` Array(UInt64),
`conversations.routings.id` Array(Array(UInt64))
)
ENGINE = ReplacingMergeTree(version)
ORDER BY (id)
SETTINGS min_bytes_for_wide_part = 0, min_rows_for_wide_part = 0;

INSERT INTO repro (`id`, `version`, `conversations.id`, `conversations.routings.id`)
VALUES (1, 1, [1], [[1]]);

select * from repro;

┌─id─┬─version─┬─conversations.id─┬─conversations.routings.id─┐
│  1 │       1 │ [1]              │ [[1]]                     │
└────┴─────────┴──────────────────┴───────────────────────────┘

```
CH version: 21.11.2.2 and upper:

```
CREATE TABLE repro (
`id` UInt64,
`version` UInt16,
`conversations.id` Array(UInt64),
`conversations.routings.id` Array(Array(UInt64))
)
ENGINE = ReplacingMergeTree(version)
ORDER BY (id)
SETTINGS min_bytes_for_wide_part = 0, min_rows_for_wide_part = 0;

INSERT INTO repro (`id`, `version`, `conversations.id`, `conversations.routings.id`)
VALUES (1, 1, [1], [[1]]);

select * from repro;

Received exception from server (version 21.11.2):                        <------------- unexpected, it should have results.
Code: 44. DB::Exception: Received from localhost:9000. DB::Exception: There is no subcolumn routings.id in type Nested(id UInt64, `routings.id` Array(UInt64)): While executing MergeTreeInOrder. (ILLEGAL_COLUMN)

```

**Unexpected Behaviour:**
It should not have an exception in the select query.



{
    if (cache && !path.empty())
        cache->emplace(getSubcolumnNameForStream(path), column);
}
ColumnPtr ISerialization::getFromSubstreamsCache(SubstreamsCache * cache, const SubstreamPath & path)
{
    if (!cache || path.empty())
        return nullptr;
    auto it = cache->find(getSubcolumnNameForStream(path));
    if (it == cache->end())
        return nullptr;
    return it->second;
}
bool ISerialization::isSpecialCompressionAllowed(const SubstreamPath & path)
{
    for (const auto & elem : path)
    {
        if (elem.type == Substream::NullMap
            || elem.type == Substream::ArraySizes
            || elem.type == Substream::DictionaryIndexes
            || elem.type == Substream::SparseOffsets)
            return false;
    }
    return true;
}
void ISerialization::deserializeTextRaw(IColumn & column, ReadBuffer & istr, const FormatSettings & settings) const