**Usage**
Postgres, MySQL, and Oracle support the expression `LEFT JOIN ... ON 1 = 1`, but ClickHouse does not.

It may be possible to replace `LEFT JOIN ... ON 1 = 1` with `CROSS JOIN`, but I want to use the query in the same form for lots of databases.

Please support the expression `LEFT JOIN ... ON 1 = 1`.


**Detailed SQL**
```SQL
CREATE TABLE test
(
    `name` Nullable(String),
    `id` int
)
ENGINE = Log();

insert into test values ('a', 1) ('b', 2) (null, 3);

select * from test t1 left join (select * from test ) t2 on 1 = 1   
-- DB::Exception: Not equi-join ON expression: 1 = 1. No columns in one of equality side.: While processing 1 = 1.
```

std::vector<KeyGetter> && key_getter_vector,
    const std::vector<const Map *> & mapv,
    AddedColumns & added_columns,
    JoinStuff::JoinUsedFlags & used_flags)
{
    bool has_null_map = std::any_of(added_columns.join_on_keys.begin(), added_columns.join_on_keys.end(),
                                    [](const auto & k) { return k.null_map; });
    if (added_columns.need_filter)
    {
        if (has_null_map)
            return joinRightColumnsSwitchMultipleDisjuncts<KIND, STRICTNESS, KeyGetter, Map, true, true>(std::forward<std::vector<KeyGetter>>(key_getter_vector), mapv, added_columns, used_flags);
        else
            return joinRightColumnsSwitchMultipleDisjuncts<KIND, STRICTNESS, KeyGetter, Map, true, false>(std::forward<std::vector<KeyGetter>>(key_getter_vector), mapv, added_columns, used_flags);
    }
    else
    {
        if (has_null_map)
            return joinRightColumnsSwitchMultipleDisjuncts<KIND, STRICTNESS, KeyGetter, Map, false, true>(std::forward<std::vector<KeyGetter>>(key_getter_vector), mapv, added_columns, used_flags);
        else
            return joinRightColumnsSwitchMultipleDisjuncts<KIND, STRICTNESS, KeyGetter, Map, false, false>(std::forward<std::vector<KeyGetter>>(key_getter_vector), mapv, added_columns, used_flags);
    }
}
template <ASTTableJoin::Kind KIND, ASTTableJoin::Strictness STRICTNESS, typename Maps>
IColumn::Filter switchJoinRightColumns(