php - 获取每个帖子的最新单个评论

Question

获取每篇文章的最新单个评论

   SELECT * 
     FROM ( `comments` )
LEFT JOIN  `posts` 
       ON  `posts`.`id` =  `comments`.`case_id` 
    WHERE  `comments`.`user_id` =  '8'
 GROUP BY  `comments`.`case_id` 
 ORDER BY  `comments`.`created_date` DESC

Answer 1

试试这个，让我知道它是否能回答您的问题:

SELECT * FROM comments 
RIGHT JOIN posts ON posts.id = comments.case_id 
WHERE comments.user_id = '8' AND comments.created_date = (SELECT MAX(created_date) FROM comments WHERE case_id = posts.id)