選擇where子句是間隔

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); 

我想選擇計數（ID），其中order_status_history.new_status是一個間隔例如（2 < = order_status_history.new_status < = 6），沒有一個單一INT。如何在這個SQL中做到這一點？

Answer 1

正如我記得你可以添加Where語句作爲一個字符串，就像在一個本地的SQL查詢。 請試試這個：

$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'); 

這工作正常？

Answer 2

你覺得這是什麼：

$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);