**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.
```

{
    if (nullable)
    {
        JoinCommon::convertColumnToNullable(column);
    }
    else
    {
        
        if (column.column)
            if (const auto * nullable_column = checkAndGetColumn<ColumnNullable>(*column.column))
                column.column = filterWithBlanks(column.column, nullable_column->getNullMapColumn().getData(), true);
        JoinCommon::removeColumnNullability(column);
    }
    return std::move(column);
}
static ColumnWithTypeAndName correctNullability(ColumnWithTypeAndName && column, bool nullable, const ColumnUInt8 & negative_null_map)