sql SQL：为所有帖子和页面添加自定义字段

Posted 2021-05-13

INSERT INTO wp_postmeta (post_id, meta_key, meta_value)
SELECT ID AS post_id, 'UniversalCustomField'
AS meta_key 'MyCustomFieldValue AS meta_value FROM wp_posts
WHERE ID NOT IN (SELECT post_id FROM wp_postmeta WHERE meta_key = 'UniversalCustomField');