Question

我在wordpress中有一个数据库表，它是从Movable Type CMS导入的，所以它并不完美。

表：wp_posts
专栏：post_content

内部post_content是整个博文，在某些情况下，它们包含带有URL的内嵌图像，例如：

    ...post content...<img src="http://url.com/images/image1.jpg"/>...content
    ...post content...<img src="http://url.com/image2.jpg"/>...content

我试图让所有网址都指向http://url.com/images/

目前我将此作为我的SQL查询，仅当路径不是url.com/images时才会生效，它变为url.com/images/images/：

UPDATE wp_posts
SET post_content = REPLACE(post_content,'url.com','url.com/images')
WHERE post_content LIKE '%url.com%';

有没有办法运行单个查询并将所有必要的行更新为相同的值？

Answer 1

最简单的方法是将现有网址转换为其他网址，运行原始查询，然后将其全部还原。

此查询会将url.com/images的所有实例替换为[PLACEHOLDER]。

UPDATE wp_posts
SET post_content = REPLACE(post_content,'url.com/images','[PLACEHOLDER]')
WHERE post_content LIKE '%url.com/images%';

现在运行原始查询以将/images追加到url.com：

UPDATE wp_posts
SET post_content = REPLACE(post_content,'url.com','url.com/images')
WHERE post_content LIKE '%url.com%';

现在你可以自由地移动[PLACEHOLDER]：

UPDATE wp_posts
SET post_content = REPLACE(post_content,'[PLACEHOLDER]','url.com/images')
WHERE post_content LIKE '%[PLACEHOLDER]%';

一体化，复制＆amp;粘贴方便：

UPDATE wp_posts
SET post_content = REPLACE(post_content,'url.com/images','[PLACEHOLDER]')
WHERE post_content LIKE '%url.com/images%';
UPDATE wp_posts
SET post_content = REPLACE(post_content,'url.com','url.com/images')
WHERE post_content LIKE '%url.com%';
UPDATE wp_posts
SET post_content = REPLACE(post_content,'[PLACEHOLDER]','url.com/images')
WHERE post_content LIKE '%[PLACEHOLDER]%';

替换行内的部分值

1 个答案: