刚刚进了下服务器后台，天啊，数据库怎么突然变得这么大了？？？居然20多M！前几天还是十几M呢，仔细检查一下，原来是wp_posts这个变大了，再进入此表看了下，post_type里的revision突然又有了接近2000行数据！
哦，原来前天我进行永久链接更换的时候，WP自动保存了所有修订记录，应该是这样，要不然不会突然之间变大这么多。
运行下面这段代码：DELETE FROM wp_posts WHERE post_type=‘revision‘;
DELETE FROM wp_postmeta WHERE post_id IN (SELECT id FROM wp_posts WHERE post_type = ‘revision‘);
DELETE FROM wp_term_relationships WHERE object_id IN (SELECT id FROM wp_posts WHERE post_type=‘revision‘);
DELETE FROM wp_posts WHERE post_type=‘revision‘;
DELETE FROM wp_term_relationships WHERE object_id IN (SELECT id FROM wp_posts WHERE post_type=‘revision‘);
DELETE FROM wp_posts WHERE post_type=‘revision‘;
