**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.
```

{
    clauses.clear();
    columns_from_joined_table.clear();
    columns_added_by_join.clear();
    original_names.clear();
    renames.clear();
    left_type_map.clear();
    right_type_map.clear();
}
void TableJoin::addUsingKey(const ASTPtr & ast)
{
    addKey(ast->getColumnName(), renamedRightColumnName(ast->getAliasOrColumnName()), ast);
}
void TableJoin::addDisjunct()
{
    clauses.emplace_back();
    if (getStorageJoin() && clauses.size() > 1)
        throw Exception("StorageJoin with ORs is not supported", ErrorCodes::NOT_IMPLEMENTED);
}
void TableJoin::addOnKeys(ASTPtr & left_table_ast, ASTPtr & right_table_ast)
{
    addKey(left_table_ast->getColumnName(), right_table_ast->getAliasOrColumnName(), left_table_ast, right_table_ast);
}
size_t TableJoin::rightKeyInclusion(const String & name) const