将数据库中的glasses更新成<a href=http://www.cheapglasses123.com>cheap glasses</a>
update wp_posts set post_content=replace(post_content,'glasses','<a href=http://www.cheapglasses123.com>cheap glasses</a>')
将数据库中的http://www.spectaclesexpert.com更新成http://www.glassespeople.com
update wp_posts set post_content=replace(post_content,'http://www.spectaclesexpert.com','http://www.glassespeople.com')