```
$ ~/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)

{
    if (settings.json.named_tuples_as_objects
        && have_explicit_names)
    {
        skipWhitespaceIfAny(istr);
        assertChar('{', istr);
        skipWhitespaceIfAny(istr);
        addElementSafe(elems, column, [&]
        {
            
            for (auto i : ext::range(0, ext::size(elems)))
            {
                if (i > 0)
                {
                    skipWhitespaceIfAny(istr);
                    assertChar(',', istr);
                    skipWhitespaceIfAny(istr);
                }
                std::string name;
                readDoubleQuotedString(name, istr);
                skipWhitespaceIfAny(istr);
                assertChar(':', istr);
                skipWhitespaceIfAny(istr);