**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.
```

{
    const auto & nested = nullable_col->getNestedColumn();
    const auto & nullmap = nullable_col->getNullMapColumn().getData();
    if (auto * lc = typeid_cast<ColumnLowCardinality *>(dst.get()); lc && !nested.lowCardinality())
    {
        for (size_t i = 0; i < nullable_col->size(); ++i)
        {
            if (nullmap[i])
                lc->insertDefault();
            else
                lc->insertRangeFromFullColumn(nested, i, 1);
        }
    }
    else
    {
        for (size_t i = 0; i < nullable_col->size(); ++i)
        {
            if (nullmap[i])
                dst->insertDefault();
            else
                dst->insertFrom(nested, i);
        }
    }
}
ColumnPtr changeLowCardinality(const ColumnPtr & column, const ColumnPtr & dst_sample)