postgresql join query using codeigniter code example

Example: how to use join query in codeigniter

public function getdata(){	

	$this->db->select('*');
	$this->db->from('table1'); // this is first table name
	$this->db->join('table2', 'table2.id = table1.id'); // this is second table name with both table ids
	$query = $this->db->get();
	return $query->result();

	}