批量清理WordPress的MySQL数据库字段
update twi_postmeta set meta_key = null
update twi_postmeta set meta_value = null
update twi_posts set post_name = null
update twi_posts set post_content = null
update twi_posts set post_title=post_content
update twi_posts set guid = replace(guid,'blog.quany.info','www.quany.info');