mySQL子查询限制

Question

这可能是一个简单的...我怎么能用这个查询实现我想要的:

delete from posts where id not in
(SELECT id FROM posts order by timestamp desc limit 0, 15)

所以,简而言之,我想删除最新的15个帖子.

当我尝试该查询时,我明白了

MySQL还不支持'LIMIT&IN/ALL/ANY/SOME子查询

编辑

mySQL Server version: 5.5.8
mySQL Client version: mysqlnd 5.0.7-dev - 091210 - $Revision: 304625 $

错误:#1235 - 此版本的MySQL尚不支持'LIMIT&IN/ALL/ANY/SOME子查询'

Answer 1

试试这个:

DELETE 
FROM posts 
WHERE id not in (
      SELECT * FROM (
            SELECT id 
            FROM posts 
            ORDER BY timestamp desc limit 0, 15
      ) 
      as t);

Answer 2

你可以试试这个:

DELETE 
    p1.* 
FROM 
    posts p1 INNER JOIN 
    (SELECT 
            id 
    FROM 
            posts 
            ORDER BY timestamp DESC 
            LIMIT 0, 15
    ) AS p2 
ON p1.id = p2.id;