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.



{
    String field;
    
    readString(field, istr);
    ReadBufferFromString buf(field);
    deserializeWholeText(column, buf, settings);
}
void ISerialization::serializeTextRaw(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings & settings) const
{
    serializeText(column, row_num, ostr, settings);
}
size_t ISerialization::getArrayLevel(const SubstreamPath & path)
{
    size_t level = 0;
    for (const auto & elem : path)
        level += elem.type == Substream::ArrayElements;
    return level;
}
bool ISerialization::hasSubcolumnForPath(const SubstreamPath & path, size_t prefix_len)
{
    if (prefix_len == 0 || prefix_len > path.size())
        return false;
    size_t last_elem = prefix_len - 1;
    return path[last_elem].type == Substream::NullMap
            || path[last_elem].type == Substream::TupleElement
            || path[last_elem].type == Substream::ArraySizes;
}
ISerialization::SubstreamData ISerialization::createFromPath(const SubstreamPath & path, size_t prefix_len)