php – 限制搜索并替换为类别

我希望在主要网站上找到并替换某个关键字.

我通常会使用类似的东西

UPDATE wp_posts 
   SET post_content = REPLACE (post_content, 'Item to replace here', 'Replacement text here');  

但是,我不希望更新跨越整个站点,我希望将其限制为仅一个类别.

谁能告诉我如何实现这一目标？

解决方法:

更新：更确切地说,查询应该看起来

UPDATE wp_term_relationships r JOIN wp_posts p 
    ON r.object_id = p.id JOIN wp_terms t
    ON r.term_taxonomy_id = t.term_id JOIN wp_term_taxonomy x
    ON r.term_taxonomy_id = x.term_taxonomy_id
   SET p.post_content = REPLACE(post_content, 'Item to replace here', 'Replacement text here')
 WHERE t.name = 'My Category'
   AND x.taxonomy = 'category'
   AND x.parent = 0 -- top level category

注意：在更新任何内容之前：

1)您可以通过发布来检查哪些帖子会受到影响

SELECT *
  FROM wp_term_relationships r JOIN wp_posts p 
    ON r.object_id = p.id JOIN wp_terms t
    ON r.term_taxonomy_id = t.term_id JOIN wp_term_taxonomy x
    ON r.term_taxonomy_id = x.term_taxonomy_id
 WHERE t.name = 'My Category'
   AND x.taxonomy = 'category'
   AND x.parent = 0  -- top level category

2)确保你有wordpress数据库的可靠备份.