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1、使用插件Delete Duplicate Posts
2、使用mysql管理工具执行下面的sql语句
CREATE TABLE my_tmp AS SELECT MIN(ID) AS col1 FROM wp_posts GROUP BY post_title;
DELETE FROM wp_posts WHERE ID NOT IN (SELECT col1 FROM my_tmp);
DROP TABLE my_tmp;
3、写一个PHP文件,取名delete.php。上传至网站根目录,打开浏览器运行http://www.域名/delete.php
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