**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.
```

{
    return forceNullableLeft() && JoinCommon::canBecomeNullable(column_type);
}
bool TableJoin::rightBecomeNullable(const DataTypePtr & column_type) const
{
    return forceNullableRight() && JoinCommon::canBecomeNullable(column_type);
}
void TableJoin::addJoinedColumn(const NameAndTypePair & joined_column)
{
    columns_added_by_join.emplace_back(joined_column);
}
NamesAndTypesList TableJoin::correctedColumnsAddedByJoin() const
{
    NamesAndTypesList result;
    for (const auto & col : columns_added_by_join)
    {
        DataTypePtr type = col.type;
        if (hasUsing())
        {
            if (auto it = right_type_map.find(col.name); it != right_type_map.end())
                type = it->second;
        }
        if (rightBecomeNullable(type))
            type = JoinCommon::convertTypeToNullable(type);
        result.emplace_back(col.name, type);
    }
    return result;
}
void TableJoin::addJoinedColumnsAndCorrectTypes(NamesAndTypesList & left_columns, bool correct_nullability)