wordpress怎么一次性消除标题重复文章

　　有些站长同学使用wordpress做采集站，不断的云采集各类文章自动发布到自己的网站上。但采集站最大的问题就是会采集到好多重复文章。这时，我们需将采集过来的重复文章进行去重处理。（相关教程：wordpress怎样实现手动采集）

　　以下是二种一次性消除标题重复文章的方式：

　　去除重复文章，只保留一篇

CREATE TABLE my_tmp AS SELECT MIN(ID) AS col1 FROM wp_posts GROUP BY post_title;<br />

DELETE FROM wp_posts WHERE ID NOT IN (SELECT col1 FROM my_tmp);<br />

DROP TABLE my_tmp;

　　去除重复文章，一片都不保留

CREATE TABLE my_tmp AS Select ID AS col1 From wp_posts Where post_title In (Select post_title From wp_posts Group By post_title Having Count(*)>2);<br />

DELETE FROM wp_posts WHERE ID IN (SELECT col1 FROM my_tmp); <br />

DROP TABLE my_tmp;

　　另一种清除所有重复文章的方式

CREATE TABLE my_tmp AS Select ID AS col1 From wp_posts Where post_title In (Select post_title From wp_posts Group By post_title Having Count(*)>2);DELETE FROM wp_posts WHERE ID IN (SELECT col1 FROM my_tmp); DROP TABLE my_tmp;

　　操作方法很简单，只需将里面的SQL句子，放到自己网站数据库的 SQL框里，然后执行就可以了。（注意：操作之前，请先进行网站备份）