php - 从子句为间隔的表中选择

Question

在此:

    $this->db->select('count(o.id)');
    $this->db->from('orders o');           
            $this->db->join('order_status_history', 'o.id =  order_status_history.order_id');
            $this->db->where("(order_status_history.in_dts)::date ='" .$reportDay. "'");
            $this->db->where('order_status_history.new_status ' , 6);

我想要选择计数(id)，其中 order_status_history.new_status 是一个区间，例如(2<=order_status_history.new_status<=6)，没有一个单一的 int。如何在这个 sql 中做这个？

Answer 1

据我所知，您可以将 Where 语句添加为字符串，就像在 native sql 查询中一样。 请试试这个:

    $this->db->select('count(o.id)');
    $this->db->from('orders o');           
        $this->db->join('order_status_history', 'o.id =  order_status_history.order_id');
        $this->db->where("(order_status_history.in_dts)::date ='" .$reportDay. "'");
        $this->db->where('order_status_history.new_status BETWEEN 2 AND 6');

这行得通吗？