Question

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

我需要帮助才能将此更改为codeigniter的活动记录。

我试图从两个表中获取等于id的值并加入它。但当我尝试这样的时候

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

它只显示通过id传递的第一个连接表。

Answer 1

试试这个

    $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

默认情况下，其内连接

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

codeigniter活动记录'内部'加入

2 个答案: