**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.
```

{
    column.reserve(column.size() + count);
    for (size_t i = 0; i < count; ++i)
        type->insertDefaultInto(column);
}
bool typesEqualUpToNullability(DataTypePtr left_type, DataTypePtr right_type)
{
    DataTypePtr left_type_strict = removeNullable(recursiveRemoveLowCardinality(left_type));
    DataTypePtr right_type_strict = removeNullable(recursiveRemoveLowCardinality(right_type));
    return left_type_strict->equals(*right_type_strict);
}
JoinMask getColumnAsMask(const Block & block, const String & column_name)