为什么order_by（）在codeigniter中不起作用？

Question

为什么order_by中的codeigniter无效？

$this->db->order_by("id", "desc")->query('SELECT @rownum:=@rownum+1 rownum, t.* FROM (SELECT @rownum:=0) r, hotel_submits t');

Answer 1

尝试

$query= $this->db->query('SELECT @rownum:=@rownum+1 rownum, t.* FROM (SELECT @rownum:=0) r, hotel_submits t order by id desc');