SET @oldsite = 'URL', @newsite = 'URL';


UPDATE wp_options SET option_value = replace(option_value, @oldsite,  @newsite) WHERE option_name = 'home' OR option_name = 'siteurl';
UPDATE wp_posts SET guid = replace(guid,  @oldsite,@newsite);
UPDATE wp_posts SET post_content = replace(post_content,  @oldsite, @newsite);
UPDATE wp_postmeta SET meta_value = replace(meta_value, @oldsite,@newsite);