```
$ ~/arc/build/clickhouse/programs/clickhouse client
ClickHouse client version 21.2.1.1-arcadia.
Connecting to localhost:9000 as user default.
Connected to ClickHouse server version 21.2.1 revision 54447.

max42-dev.sas.yp-c.yandex.net :) create table t(a Tuple(UInt8, UInt8)) engine = Log()

CREATE TABLE t
(
    `a` Tuple(UInt8, UInt8)
)
ENGINE = Log

Query id: b49dbb5d-d2a9-4c99-b90e-00c60edf2103

Ok.

0 rows in set. Elapsed: 0.005 sec. 

max42-dev.sas.yp-c.yandex.net :) insert into t values ((NULL, 42))

INSERT INTO t VALUES

Query id: 318d6f3e-f3bc-467c-85ff-62da908230dd

Logical error: 'Unexpected literal type inside Array: Nothing. It's a bug'.
Aborted (core dumped)
```

This is CH similar to one from Arcadia r7788360 (~fresh master version from GH).

(you don't have to strictly follow this form)

}
        catch (Exception & e)
        {
            if (isParseError(e.code()))
                e.addMessage(" at row " + std::to_string(total_rows));
            throw;
        }
    }
    
    for (size_t i = 0; i < columns.size(); ++i)
    {
        if (!templates[i] || !templates[i]->rowsCount())
            continue;
        if (columns[i]->empty())
            columns[i] = IColumn::mutate(templates[i]->evaluateAll(block_missing_values, i));
        else
        {
            ColumnPtr evaluated = templates[i]->evaluateAll(block_missing_values, i, columns[i]->size());
            columns[i]->insertRangeFrom(*evaluated, 0, evaluated->size());
        }
    }
    if (columns.empty() || columns[0]->empty())
    {
        readSuffix();
        return {};
    }
    size_t rows_in_block = columns[0]->size();
    return Chunk{std::move(columns), rows_in_block};
}
void ValuesBlockInputFormat::readRow(MutableColumns & columns, size_t row_num)