在php上连接两个具有相同列的列

在php上连接两个具有相同列的列,php,mysql,mysqli,Php,Mysql,Mysqli,我有这样的桌子 id | title 1 | title john 2 | title alicia 3 | title alex 用户 id | name 1 | john 2 | alicia 3 | alex 遵循表格 id | follow | follower 1 | john | alex 2 | alicia | alex 帖子 id | title | content | name 1 |

我有这样的桌子

id  | title
1   | title john    
2   | title alicia  
3   | title alex
用户

id |  name 
1  |  john 
2  |  alicia 
3  |  alex
遵循表格

id |  follow  | follower
1  |  john    | alex
2  |  alicia  | alex
帖子

id |  title         | content | name
1  |  title john    | ....... | john  
2  |  title alicia  | ....... | alicia 
3  |  title alex    | ....... | alex 
榜样

结果如下:

id  | title
1   | title john    
2   | title alicia  
上面的实际sql是正确的,但我只想在$follow中添加一个查询

我的问题是,如何将user.id 3(alex)放入字段$follow? 我想要这样的东西

id  | title
1   | title john    
2   | title alicia  
3   | title alex
感谢您已经愿意提供帮助

您可以使用
CONCAT()
CONCAT_WS()
作为派生字段来连接两列的结果

SELECT
  CONCAT_WS(' ', title, name) as full_name
FROM
 //...  

在这种情况下,您必须使用alias,还必须实现select查询,我已经尝试过了,效果很好

<?php 
$select_one = select * from follow_table where id = '$id';
    $query_one = mysqli_query($mysqli, $select_one) or die (mysqli_error($mysqli));
                 while ($follow = mysqli_fetch_array($query_one)) { 
                 $follow = $follow['follow']; 

$select_two = select posts.name as posted_name,posts.* from posts where name = '$follow';
    $query_two = mysqli_query($mysqli, $select_two) or die (mysqli_error($mysqli));
                 while ($posts = mysqli_fetch_array($query_two)) {  

                 echo $posts['title'];
                 echo $posts['posted_name'];
                 }
                 }

替换
$select_one

SELECT name
FROM user
JOIN follow_table ON (
       follow_table.follower = user.name 
    OR follow_table.follow = user.name
)
WHERE follower = '$id';

这将检索每个用户,后跟alex、alex本人。

这是分配吗?lol:D