**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.
```

size_t rows_added = 0;
    for (size_t left_row = start_left_row; left_row < rows_left; ++left_row)
    {
        size_t block_number = 0;
        for (const Block & block_right : data->blocks)
        {
            ++block_number;
            if (block_number < start_right_block)
                continue;
            size_t rows_right = block_right.rows();
            rows_added += rows_right;
            for (size_t col_num = 0; col_num < num_existing_columns; ++col_num)
                dst_columns[col_num]->insertManyFrom(*src_left_columns[col_num], left_row, rows_right);
            for (size_t col_num = 0; col_num < num_columns_to_add; ++col_num)
            {
                const IColumn & column_right = *block_right.getByPosition(col_num).column;
                dst_columns[num_existing_columns + col_num]->insertRangeFrom(column_right, 0, rows_right);
            }
        }
        start_right_block = 0;
        if (rows_added > max_joined_block_rows)
        {
            not_processed = std::make_shared<NotProcessedCrossJoin>(
                NotProcessedCrossJoin{{block.cloneEmpty()}, left_row, block_number + 1});
            not_processed->block.swap(block);
            break;
        }
    }
    for (const ColumnWithTypeAndName & src_column : sample_block_with_columns_to_add)
        block.insert(src_column);