**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.
```

{
public:
    struct TypeAndName
    {
        DataTypePtr type;
        String name;
        String qualified_name;
        TypeAndName(DataTypePtr type_, const String & name_, const String & qualified_name_)
            : type(type_), name(name_), qualified_name(qualified_name_)
        {
        }
    };
    AddedColumns(
        const Block & block_with_columns_to_add,
        const Block & block,
        const Block & saved_block_sample,
        const HashJoin & join,
        std::vector<JoinOnKeyColumns> && join_on_keys_,
        bool is_asof_join,
        bool is_join_get_)
        : join_on_keys(join_on_keys_)
        , rows_to_add(block.rows())