**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.
```

{
    bool multiple_disjuncts = !table_join->oneDisjunct();
    
    bool save_key_columns = !table_join->forceHashJoin() || isRightOrFull(kind) || multiple_disjuncts;
    if (save_key_columns)
    {
        saved_block_sample = right_table_keys.cloneEmpty();
    }
    else if (strictness == ASTTableJoin::Strictness::Asof)
    {
        
        saved_block_sample.insert(right_table_keys.safeGetByPosition(right_table_keys.columns() - 1));
    }
    
    for (auto & column : sample_block_with_columns_to_add)
    {
        if (!saved_block_sample.findByName(column.name))
        {
            saved_block_sample.insert(column);
        }
    }
    if (nullable_right_side)
    {
        JoinCommon::convertColumnsToNullable(saved_block_sample, (isFull(kind) && !multiple_disjuncts ? right_table_keys.columns() : 0));
    }
}
Block HashJoin::structureRightBlock(const Block & block) const