**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.
```

{
        if (!nulls_position.has_value())
            nulls_position = parent.data->blocks_nullmaps.begin();
        auto end = parent.data->blocks_nullmaps.end();
        for (auto & it = *nulls_position; it != end && rows_added < max_block_size; ++it)
        {
            const auto * block = it->first;
            ConstNullMapPtr nullmap = nullptr;
            if (it->second)
                nullmap = &assert_cast<const ColumnUInt8 &>(*it->second).getData();
            for (size_t row = 0; row < block->rows(); ++row)
            {
                if (nullmap && (*nullmap)[row])
                {
                    for (size_t col = 0; col < columns_keys_and_right.size(); ++col)
                        columns_keys_and_right[col]->insertFrom(*block->getByPosition(col).column, row);
                    ++rows_added;
                }
            }
        }
    }
};
std::shared_ptr<NotJoinedBlocks> HashJoin::getNonJoinedBlocks(const Block & left_sample_block,