Question

当我在我的wp_posts表（使用phpmyadmin）上运行此代码时，它会返回一个重复的帖子。

SELECT a.ID, a.post_title, a.post_type, a.post_status
FROM wp_posts AS a
 INNER JOIN (
   SELECT post_title, MIN( id ) AS min_id
   FROM wp_posts
   WHERE post_type = 'post'
   AND post_status = 'publish'
   GROUP BY post_title
   HAVING COUNT( * ) > 1
 ) AS b ON b.post_title = a.post_title
AND b.min_id <> a.id
AND a.post_type = 'post'
AND a.post_status = 'publish'

请注意，这个给定的帖子实际上并不重复，它只与另一个帖子具有相同的标题（鉴于上面的代码，正常行为会查找重复的标题）。然而，问题是数据库中实际上有数百个重复的帖子（如果我手动查看，我可以看到它们），那么为什么我不能使用上面的代码找到它们呢？

我还可以从wordpress管理面板中看到这两个重复的帖子......
我也尝试使用一些Wordpress插件，他们都发现了与上面代码相同的重复帖子，但没有其他人。）

编辑：如果我看两个随机重复，一个有：

ID 9462
post date 2017-03-07 13:06:31
post content "foo"
post title "Les pendules à l'heure"
post status "publish"
post type "post"
guid "http://www.exemple.com/?p=9462"

另一个有：

ID 11409
post date 2017-03-07 13:06:31
post content "foo"
post title "Les pendules à l&#039;heure"
post status "publish"
post type "post"
guid "http://www.exemple.com/?p=9462"

由于

Answer 1

以下是我设法解决问题的方法......

我注意到即使重复的帖子之间的标题看起来相同，其中一个有撇号，而另一个有＆amp;＃039;

首先，我运行此查询以查看有多少帖子标题有撇号：

SELECT post_title FROM wp_posts WHERE post_title LIKE "%'%",

它返回了1825个结果。然后我运行以下命令来查看有多少帖子标题＆amp;＃039;

SELECT post_title FROM wp_posts WHERE post_title LIKE "%&#039;%"

它返回了720个结果。所以我想我会替换所有＆amp;＃039;通过撇号，使用以下查询：

UPDATE wp_posts SET post_title = REPLACE (post_title, '&#039;', '\'');

然后，我能够使用：

SELECT a.ID, a.post_title, a.post_type, a.post_status
FROM wp_posts AS a
 INNER JOIN (
   SELECT post_title, MIN( id ) AS min_id
   FROM wp_posts
   WHERE post_type = 'post'
   AND post_status = 'publish'
   GROUP BY post_title
   HAVING COUNT( * ) > 1
 ) AS b ON b.post_title = a.post_title
AND b.min_id <> a.id
AND a.post_type = 'post'
AND a.post_status = 'publish'

返回了572个帖子，我只是使用以下内容删除：

DELETE a.*
FROM wp_posts AS a
   INNER JOIN (
      SELECT post_title, MIN( id ) AS min_id
      FROM wp_posts
      WHERE post_type = 'post'
      AND post_status = 'publish'
      GROUP BY post_title
      HAVING COUNT( * ) > 1
   ) AS b ON b.post_title = a.post_title
AND b.min_id <> a.id
AND a.post_type = 'post'
AND a.post_status = 'publish'

Answer 2

Try this

DELETE a.*
FROM wp_posts AS a
   INNER JOIN (
      SELECT post_title, MIN( id ) AS min_id
      FROM wp_posts
      WHERE post_type = 'post'
      AND post_status = 'publish'
      GROUP BY post_title
      HAVING COUNT( * ) > 1
   ) AS b ON b.post_title = a.post_title
AND b.min_id <> a.id
AND a.post_type = 'post'
AND a.post_status = 'publish'

Answer 3

以上方法可能很慢。您可以用大男孩的方式来做...

-创建临时表CREATE TABLE posts_temp_table LIKE wp_posts;

-添加约束ALTER TABLE posts_temp_table ADD UNIQUE（YOUR_UNIQUE_FIELD，id）;

-复制数据INSERT IGNORE INTO posts_temp_table SELECT * FROM wp_posts;

-重命名和删除重命名表wp_posts到old_wp_posts，posts_temp_table到wp_posts；删除表old_wp_posts;

如何在DB中删除重复的Wordpress帖子

3 个答案: