Question

错误号码：1064

您的SQL语法有错误;检查手册对应于您的MySQL服务器版本，以便使用正确的语法靠近＆＃39;）和qbank.institute_id =＆＃39; 1＆＃39;按字段排序（qid，）＆＃39;在第1行

SELECT * FROM `qbank` JOIN question_category ON qbank.cid = question_category.cid WHERE qbank.qid IN ( ) and qbank.institute_id ='1' ORDER BY FIELD( qid, )

以下是完整代码：

function get_question($rid){
 $institute_id = $this->session->userdata('institute_id');

    $query = $this -> db -> query("select quiz_result.* from quiz_result where rid='$rid' and institute_id='$institute_id'");
    $row=$query->row_array();
    $qids=$row['qids'];

    $query = $this -> db -> query("SELECT * FROM  `qbank` JOIN question_category ON qbank.cid = question_category.cid WHERE qbank.qid IN ( $qids ) and qbank.institute_id ='$institute_id'  ORDER BY FIELD( qid, $qids )");
    $questions=$query->result_array();
    $query = $this -> db -> query("SELECT * FROM  q_options WHERE qid IN ( $qids )  and institute_id = '$institute_id'");
    $options=$query->result_array();
    $dataarr=array($questions,$options);
    return $dataarr;
  }

Answer 1

有2个语法错误。

你不能有一个空列表（）
你没有字段就在订单中有一个commma。（qid，）

Answer 2

准备以下声明并分享准备好的声明/查询以检查确切的问题 -

SET @qry=CONCAT("SELECT * FROM qbank JOIN question_category ON qbank.cid = question_category.cid WHERE qbank.qid IN ( ",$qids,") AND qbank.institute_id ='",$institute_id,"' ORDER BY FIELD( qid, ",$qids,")")

可能的原因：您以无效格式传递参数值。

数据库错误发生

2 个答案: