```
$ ~/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)

(nested_type_info.isNativeInt()  && nested_field_type == Type::Int64)  ||
                (nested_type_info.isFloat64()    && nested_field_type == Type::Float64);
            if (!are_types_compatible)
                return false;
        }
        Field array_same_types = convertFieldToType(collection, *complex_type, nullptr);
        columns[column_idx]->insert(array_same_types);
        return true;
    }
    else
    {
        Field number;
        if (type_info.is_nullable && 4 <= istr.available() && 0 == strncasecmp(istr.position(), "NULL", 4))
            istr.position() += 4;
        else
        {
            
            
            
            bool negative = *istr.position() == '-';
            if (negative || *istr.position() == '+')
                ++istr.position();
            static constexpr size_t MAX_LENGTH_OF_NUMBER = 319;
            char buf[MAX_LENGTH_OF_NUMBER + 1];
            size_t bytes_to_copy = std::min(istr.available(), MAX_LENGTH_OF_NUMBER);
            memcpy(buf, istr.position(), bytes_to_copy);
            buf[bytes_to_copy] = 0;
            char * pos_double = buf;
            errno = 0;
            Float64 float_value = std::strtod(buf, &pos_double);