php

Question

我想按如下所示订购我的查询。 :)

Table 问题

id  question 
100  What is your name?  
101  What is your nick name?

Table 回答

id answeroption  questionid
1  John  100 
2  Mike  100
3  Adam  100
4  Am   101 
5  Den  101

所以，我希望结果显示如下，答案选项水平浮动一行：

id   question  answer1 answer2 answer3 
100    What is your name? John Mike Adam 
101    What is your nick name? Am Den

我使用的函数查询，但我坚持要修复我实际想要的结果。

function test($con){
    $q = "select a.id, a.question, b.answeroption
            from question a
            inner join answer b
            on a.id = b.questionid
          ";
    $run = mysqli_query($con,$q);
    $row = mysqli_fetch_array($run);
    return $row;

}

Answer 1

您将要使用 GROUP_CONCAT 和 GROUP BY

 $q = "SELECT a.id, a.question, GROUP_CONCAT(b.answeroption) AS answeroptions
            FROM question a
                INNER JOIN answer b ON a.id = b.questionid
            GROUP BY a.id
          ";

php - 如何使用 answeroption 水平浮动一行对查询结果进行排序

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mysqli