在气体ORM中查询Mysql

Question

1. 这是我要来的

   SELECT * FROM (`lkt_messages`) WHERE `sender_id` = '1' AND `receiver_id` = '2' OR `sender_id` = '2' OR `receiver_id` = '1' ORDER BY `added_on` DESC 
   

我想要这样

    SELECT * FROM (`lkt_messages`) WHERE `sender_id` = '1' AND `receiver_id` = '2' OR `sender_id` = '2' AND `receiver_id` = '1' ORDER BY `added_on` DESC 

我在下面写下了这个问题。

    $cls=MESSAGES_TBL;
            $id= $this->session->userdata('user_id');
            $condition_query=array('sender_id'=>$replymsg_id,'receiver_id'=>$id);
            $condition_query1=array('sender_id'=>$id,'receiver_id'=>$replymsg_id);

            $data=$cls::where($condition_query)->or_where($condition_query1);

             $result=$data->order_by('added_on', 'DESC')->all();

            return $result; 

Answer 1

以下更改应该有效：

$condition_query = "(sender_id = $replymsg_id and receiver_id = $id)";

$condition_query1 = "(sender_id = $id and receiver_id = $replymsg_id)";

$data = $cls::where($condition_query)->or_where($condition_query1);

Answer 2

试试这个SQL查询： -

SELECT * 
FROM (`lkt_messages`) 
WHERE (`sender_id` = '1' AND `receiver_id` = '2') 
OR (`sender_id = '2' AND `receiver_id` = '1') 
ORDER BY `added_on` DESC