老牛的一个网站数据量较大,接近八万条数据,需要替换所有内容中的部分内容
最快方法当然是在phpmyadmin使用sql语句来完成,替换前务必备份数据库,以免出现失误
替换语句
1 | UPDATE wp_posts SET post_content = REPLACE( post_content, 'old content A', 'new content B' ) |
解释:更新数据库中wp_posts表post_content字段的内容”old content A”为”new content B”(不包含双引号””)
快捷方法:安装WordPress插件Find and Replacer 然后使用插件来,这个方便,但是我更喜欢直接搞SQL
插件使用方法截图如下:
WordPress常用SQL语句
筛选自定义meta的YouRUrl_value包含.pdf的内容，替换为.rar
1 | UPDATE `wp_postmeta` SET `meta_value` = REPLACE( meta_value, '.pdf', '.rar' ) WHERE `meta_key` = 'YouRUrl_value' AND `meta_value` LIKE '%.pdf%' |
查找wordpress自定义字段yourmeta中包含aaa.com的记录
1 | select * from wp_postmeta WHERE `meta_key` = 'yourmeta_value' AND `meta_value` LIKE '%aaa.com%' |
建立一张表来存储查找的记录
1 | create table a_temp as select * from wp_postmeta WHERE `meta_key` = 'yourmeta_value' AND `meta_value` LIKE '%aaa.com%' |
在刚才新建的表中插入包含bbb.com的记录
1 | insert into a_temp(meta_id,post_id,meta_key,meta_value) select * from wp_postmeta WHERE `meta_key` = 'xzy1url_value' AND `meta_value` LIKE '%bbb.com%' |
mysql删除斜杠/之前的内容.如果有多个斜杠/,就多执行几次
1 | update a_temp SET meta_value = SUBSTRING(meta_value, INSTR(meta_value, '/') + 1) |
mysql在meta_value字段原有的字符串前插入字符串aaa
1 | update a_temp SET meta_value= CONCAT('aaa',meta_value) |
mysql在meta_value字段原有的字符串后插入字符串aaa
1 | update a_temp SET meta_value= CONCAT(meta_value,'aaa') |
mysql字段的字符串中格式化
1 2 3 4 | UPDATE a_temp SET meta_value = REPLACE( meta_value, ' ', '' ) UPDATE a_temp SET meta_value = REPLACE( meta_value, '.', '_' ) UPDATE a_temp SET meta_value = REPLACE( meta_value, '_rar', '.rar' ) UPDATE a_temp SET meta_value = REPLACE( meta_value, ',', '' ) |
1 | UPDATE `wp_postmeta` SET `meta_value` = REPLACE( meta_value, '.pdf', '.rar' ) WHERE `meta_key` = 'yoururl_value' AND `meta_value` LIKE '%bbbb.com%' |
筛选yoururl_value字段里包含bbbb.com内容的数据
1 | select * from wp_postmeta WHERE `meta_key` = 'yoururl_value' AND `meta_value` LIKE '%bbbb.com%' |
建立a_temp存放筛选出来的数据
1 | create table a_temp as select * from wp_postmeta WHERE `meta_key` = 'yoururl_value' AND `meta_value` LIKE '%bbbb.com%' |
将包含cccc.com内容的数据追加插入a_temp
1 | insert into a_temp(meta_id,post_id,meta_key,meta_value) select * from wp_postmeta WHERE `meta_key` = 'yoururl_value' AND `meta_value` LIKE '%cccc.com%' |
1 | create table a_temp as select * from wp_postmeta WHERE `meta_key` = 'yoururl_value' AND `meta_value` LIKE '%bbbb.com%'; |
以下是删除/左边字符
1 2 3 4 5 6 | update a_temp SET meta_value = SUBSTRING(meta_value, INSTR(meta_value, '/') + 1); update a_temp SET meta_value = SUBSTRING(meta_value, INSTR(meta_value, '/') + 1); update a_temp SET meta_value = SUBSTRING(meta_value, INSTR(meta_value, '/') + 1); update a_temp SET meta_value = SUBSTRING(meta_value, INSTR(meta_value, '/') + 1); update a_temp SET meta_value = SUBSTRING(meta_value, INSTR(meta_value, '/') + 1); update a_temp SET meta_value = SUBSTRING(meta_value, INSTR(meta_value, '/') + 1); |
替换内容中的部分字符,对内容进行格式化
1 2 3 4 5 | UPDATE a_temp SET meta_value = REPLACE( meta_value, ' ', '' ); UPDATE a_temp SET meta_value = REPLACE( meta_value, '.', '_' ); UPDATE a_temp SET meta_value = REPLACE( meta_value, '_rar', '.rar' ); UPDATE a_temp SET meta_value = REPLACE( meta_value, ',', '' ); update a_temp SET meta_value= CONCAT('http://xxxx.com/',meta_value); |
用临时表的内容替换原字段内容
1 | DELETE FROM wp_postmeta WHERE meta_key = 'yoururl_value' AND `meta_value` LIKE '%bbbb.com%' |
将a_temp表处理好后的下载地址,更新到wp_postmeta的yoururl_value
1 | UPDATE wp_postmeta,a_temp SET wp_postmeta.meta_value=a_temp.meta_value WHERE wp_postmeta.meta_id=a_temp.meta_id |
1. 删除所有未使用的标签
1 2 3 4 5 | DELETE a,b,c FROM wp_terms AS a LEFT JOIN wp_term_taxonomy AS c ON a.term_id = c.term_id LEFT JOIN wp_term_relationships AS b ON b.term_taxonomy_id = c.term_taxonomy_id WHERE c.taxonomy = 'post_tag' AND c.count = 0 |
2.删除所有文章修订版本(Revisions)以及它们的Meta数据
1 2 3 4 5 | DELETE a,b,c FROM wp_posts a LEFT JOIN wp_term_relationships b ON (a.ID = b.object_id) LEFT JOIN wp_postmeta c ON (a.ID = c.post_id) WHERE a.post_type = 'revision' |
3. 更改WordPress地址和首页地址
1 | UPDATE wp_options SET option_value = replace(option_value, 'http://www.旧网址.com', 'http://www.新网址.com') WHERE option_name = 'home' OR option_name = 'siteurl' |
4. 更改文章的GUID
1 | UPDATE wp_posts SET guid = REPLACE (guid, 'http://www.旧网址.com', 'http://www.新网址.com') |
5. 更改正文中的链接地址
1 | UPDATE wp_posts SET post_content = REPLACE (post_content, 'http://www.旧网址.com', 'http://www.新网址.com') |
6. 更新文章的Meta值
1 | UPDATE wp_postmeta SET meta_value = REPLACE (meta_value, 'http://www.旧网址.com', 'http://www.新网址.com') |
7. 重设Admin密码
1 | UPDATE wp_users SET user_pass = MD5( 'new_password' ) WHERE user_login = 'admin' |
8. 重设admin的用户名
1 | UPDATE wp_users SET user_login = 'newname' WHERE user_login = 'admin' |
9. 将作者a的文章全部转移到作者b
1 | UPDATE wp_posts SET post_author = 'b' WHERE post_author = 'a' |
10. 删除文章的meta标签
1 | DELETE FROM wp_postmeta WHERE meta_key = 'your-meta-key' |
11. 导出所有评论中的邮件地址
1 | SELECT DISTINCT comment_author_email FROM wp_comments |
12. 删除所有的Pingback
1 | DELETE FROM wp_comments WHERE comment_type = 'pingback' |
13. 删除所有的垃圾评论
1 | DELETE FROM wp_comments WHERE comment_approved = 'spam' |
14. 禁用所有激活的插件
1 | UPDATE wp_options SET option_value = '' WHERE option_name = 'active_plugins' |
15. 罗列所有未使用的Meta标签
1 | SELECT * FROM wp_postmeta pm LEFT JOIN wp_posts wp ON wp.ID = pm.post_id WHERE wp.ID IS NULL |
16. 关闭旧文章的留言
1 | UPDATE wp_posts SET comment_status = 'closed' WHERE post_date < '2009-01-01' AND post_status = 'publish' |
17. 更新留言者的网址
1 | UPDATE wp_comments SET comment_author_url = REPLACE( comment_author_url, 'http://旧网址.com', 'http://新网址.com' ) |
18. 更新正文内所有的’target=”_blank”‘为’rel=”nofollow”‘
1 | UPDATE wp_posts SET post_content = REPLACE (post_content, 'target="_blank', 'rel="nofollow') |
19.删除未使用的Meta标签
1 | DELETE pm FROM wp_postmeta pm LEFT JOIN wp_posts wp ON wp.ID = pm.post_id WHERE wp.ID IS NULL |
20.更改文章自定义字段的名称
1 | UPDATE `wp_postmeta` SET `meta_key` = '新名称' WHERE `meta_key` = '旧名称'; |
原文链接：https://xiaohost.com/1647.html，转载请注明出处。
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