SQL從另一個表中排序

Question

我想通過upvote顯示我的帖子在我的頁面上。

我的表帖子：

(id, post_name, post_description, post_category, post_subcategory) 

和表票：

(id, post_id, vote_rank) 

我可以

$bdd->query('SELECT * FROM posts WHERE post_subcategory = "'.$_GET['s'].'" ORDER BY post_name'); 

顯示我的所有文章中，我試圖用JOIN，但沒有出現。

$bdd->query('SELECT * 
      FROM posts AS p 
       JOIN votes as v ON v.post_id = p.id 
      WHERE p.post_subcategory = "'.$_GET['s'].'" 
      ORDER BY v.vote_rank'); 

任何想法？

Answer 1

$bdd->query('SELECT p.* 
     FROM posts p LEFT JOIN votes v ON v.post_id = p.id 
     WHERE p.post_subcategory = "'.$_GET['c'].'" 
     ORDER BY v.vote_rank'); 

試試看

Answer 2

嘗試使用內部聯接

$bdd->query('SELECT p.* 
     FROM posts p inner join votes v on v.post_id = p.id 
     where p.post_subcategory = "'.$_GET['c'].'" 
     order by v.vote_rank');