Double select in builder

For a database query im joining 2 tables. I want to add a second select since both tables have an id column. What i want:

Codeigniter 2:

PHP Code:

$this->db->select("*");
$this->db->select("main_table.id AS id");
$this->db->join("second_table","main_table.id = second_table.base_id","INNER");
$query = $this->db->get("main_table"); 


Codeigniter 4:

PHP Code:

$db = \Config\Database::connect();
$builder = $db->table('main_table');
$builder->select("*");
$builder->select("main_table.id AS id");
$builder->join("second_table","main_table.id = second_table.base_id","INNER");
$query = $builder->get(); 


But in Codeigniter 4 this doesnt seem to work $query->getResult() returns just the id column.

Any ideas?