Mysql查询没有返回没有喜欢或没有评论的文章

Question

在downvoting之前，请看看我的问题。

我正在撰写我的文章网站。我的网站上有一节显示热门文章。热门文章基于喜欢和评论。我使用下面的查询来显示热门文章：

select 
    s.id as story_id,
    s.title as story_title,
    COUNT(l.id) as total_likes,
    COUNT(cm.id) as total_comments
from
    stories s
right outer join 
    likes l
on 
    s.id = l.type_id
right outer join
    comments cm
on 
    cm.story_id = s.id

group by s.id

order by total_likes desc,total_comments desc

我收到的热门文章却只有5篇。文章正在展示，但只有5篇，我想要的文章没有喜欢或评论后的最后一篇这里是截图

在这里，您可以观察到只有至少有1个喜欢或评论的文章。我想收到没有喜欢或评论的文章

任何人都可以解决我的问题，提前谢谢？

Answer 1

这也将返回没有喜欢或评论的故事（你应该使用左连接）：

  select 
      s.id as story_id,
      s.title as story_title,
      COUNT(l.id) as total_likes,
      COUNT(cm.id) as total_comments
  from stories s
  left  join  likes l on  s.id = l.type_id
  left  join comments cm on  cm.story_id = s.id

  group by s.id, s.title
  order by total_likes desc,total_comments desc

Answer 2

你必须使用左连接。这应该有效：

 select 
      s.*,
      COUNT(l.id) as total_likes,
      COUNT(cm.id) as total_comments
  from stories articles
  left  join  likes l on  articles.id = l.type_id
  left  join comments cm on  cm.story_id = s.id

  group by articles.id, articles.title
  order by total_likes desc,total_comments desc

希望有所帮助