Grupo por CodeIgniter 3
$this->db->group_by(array("title", "date"));
// Produces: GROUP BY title, date
Indonesia People
$this->db->group_by(array("title", "date"));
// Produces: GROUP BY title, date$names = array('Frank', 'Todd', 'James');
$this->db->where_not_in('username', $names);
// Produces: WHERE username NOT IN ('Frank', 'Todd', 'James')