```
$ ~/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)

{
    for (const auto idx_elem : ext::enumerate(elems))
        idx_elem.second->serializeBinary(extractElementColumn(column, idx_elem.first), row_num, ostr);
}
template <typename F>
static void addElementSafe(const DataTypes & elems, IColumn & column, F && impl)
{
    
    size_t old_size = column.size();
    try
    {
        impl();
        
        size_t new_size = column.size();
        for (auto i : ext::range(1, ext::size(elems)))
        {
            const auto & element_column = extractElementColumn(column, i);
            if (element_column.size() != new_size)
            {
                
                
                throw Exception(ErrorCodes::SIZES_OF_COLUMNS_IN_TUPLE_DOESNT_MATCH,
                    "Cannot read a tuple because not all elements are present");
            }
        }
    }
    catch (...)