php - 从表中选择，其中子句是间隔

Question

在这：

    $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 是一个间隔，例如（2<=order_status_history.new_status<=6），没有一个整数。如何在这个sql中做到这一点？

Answer 1

我记得您可以将 Where 语句添加为字符串，就像在本机 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');

这管用吗 ？

Answer 2

你怎么看待这件事：

$this->db->select('count(o.id)');
$this->db->from('orders as 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_between('order_status_history.new_status ',2 , 6);