WordPress的18條必備SQL操作語句
導讀：WordPress是一套非常好的CSM（或者叫做BLOG）系統(tǒng)，其實它早已經(jīng)超越了BLOG系統(tǒng)。功能強大，操作簡單，插件繁多。下面是對WordPress操作的18條WordPress SQL查詢語句（不僅僅是查詢語句），還有刪除和修改語句。
1. 刪除所有未使用的標簽
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. 刪除所有文章修訂版本(Revisions)以及它們的Meta數(shù)據(jù)
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地址和首頁地址
UPDATE wp_options
SET option_value = replace(option_value, 'http://www.舊網(wǎng)址.com', 'http://www.新網(wǎng)址.com')
WHERE option_name = 'home' OR option_name = 'siteurl'
4. 更改文章的GUID
UPDATE wp_posts
SET guid = REPLACE (guid, 'http://www.舊網(wǎng)址.com', 'http://www.新網(wǎng)址.com')
5. 更改正文中的鏈接地址
UPDATE wp_posts
SET post_content = REPLACE (post_content, 'http://www.舊網(wǎng)址.com', 'http://www.新網(wǎng)址.com')
6. 更新文章的Meta值
UPDATE wp_postmeta
SET meta_value = REPLACE (meta_value, 'http://www.舊網(wǎng)址.com', 'http://www.新網(wǎng)址.com'
7. 重設Admin密碼
UPDATE wp_users
SET user_pass = MD5( 'new_password' )
WHERE user_login = 'admin'
8. 重設admin的用戶名
UPDATE wp_users
SET user_login = 'newname'
WHERE user_login = 'admin'
9. 將作者a的文章全部轉移到作者b
UPDATE wp_posts
SET post_author = 'b'
WHERE post_author = 'a'
10. 刪除文章的meta標簽
DELETE FROM wp_postmeta
WHERE meta_key = 'your-meta-key'
11. 導出所有評論中的郵件地址
SELECT DISTINCT comment_author_email
FROM wp_comments
12. 刪除所有的Pingback
DELETE FROM wp_comments
WHERE comment_type = 'pingback'
13. 刪除所有的垃圾評論
DELETE FROM wp_comments
WHERE comment_approved = 'spam'
14. 禁用所有激活的插件
UPDATE wp_options
SET option_value = ''
WHERE option_name = 'active_plugins'
15. 羅列所有未使用的Meta標簽
SELECT *
FROM wp_postmeta pm
LEFT JOIN wp_posts wp ON wp.ID = pm.post_id
WHERE wp.ID IS NULL
16. 關閉舊文章的留言
UPDATE wp_posts
SET comment_status = 'closed'
WHERE post_date < '2009-01-01' AND post_status = 'publish'
17. 更新留言者的網(wǎng)址
UPDATE wp_comments
SET comment_author_url = REPLACE( comment_author_url, 'http://舊網(wǎng)址.com', 'http://新網(wǎng)址.com' )
18. 更新正文內(nèi)所有的’target=”_blank”‘為’rel=”nofollow”‘
UPDATE wp_posts
SET post_content = REPLACE (post_content, 'target="_blank', 'rel
這就是全部的WordPress的18條必備SQL操作語句，希望大家能靈活掌握，學以致用，為以后的工作帶去方便。
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