Mysql查询无法正常工作

Question

以下sql有什么问题？我根本不知道

SELECT  `posts`.* 
FROM `posts`  
WHERE ((`posts`.`featured` = 1 OR `posts`.`author_id` = 5)) 
ORDER BY (ln( 1 + posts.likes_count) +  
         (EXTRACT(EPOCH FROM posts.created_at) - 
          1327654606)/9000) desc LIMIT 15

感谢

Answer 1

EPOCH在MySQL中无效。尝试替换

EXTRACT(EPOCH FROM posts.created_at)

与

UNIX_TIMESTAMP(posts.created_at)

获取自posts.created_at以来1970-01-01 00:00:00的秒数。

请参阅MySQL UNIX_TIMESTAMP