codeigniter活動記錄“內部”聯接

Question

query('SELECT * FROM answers INNER JOIN questions 
      WHERE answers.answerId= questions.questionId AND answers.answerId IN (' . $id . ')')

我需要幫助將其更改為活動記錄的codeigniter。

我試圖從兩個表中獲取等於id的值並將其加入。 但是當我嘗試這樣

$this->db->select("*"); $this->db->join("questions","questions.questionId = answers.answerId"); $this->db->where_in('answers.answerId',$id); $res = $this->db->get("answers"); 

它僅顯示通過id傳遞的第一個聯接表。

Answer 1

嘗試這個

    $this->db->select('*');
    $this->db->from('answers'); 
    $this->db->join('questions','questions.questionId=answers.answerId');
    $this->db->where_in('answers.answerId',$id);
    $query=$this->db->get();
    $result=$query->result();

Answer 2

默認情況下，其內部聯接

 $this->db->select("*");
 $this->db->join("questions","questions.questionId = answers.answerId");
 $this->db->where_in('answers.answerId',$id);
 $res = $this->db->get("answers");