Код: Выделить всё
UPDATE wp_options SET option_value = replace(option_value, 'http://domain.ru', ''http://newdomain.ru') WHERE option_name = 'home' OR option_name = 'siteurl';
UPDATE wp_posts SET guid = replace(guid, 'http://domain.ru',''http://newdomain.ru');
UPDATE wp_posts SET post_content = replace(post_content, 'http://domain.ru', ''http://newdomain.ru');
или
UPDATE wp_postmeta SET meta_value = REPLACE (meta_value, 'http://domain.ru',''http://newdomain.ru');