SET @old_URL = 'https://www.landleben-linum.de';
    SET @new_URL = 'http://localhost:8080';

    UPDATE wp_options SET option_value = replace(option_value, @old_URL, @new_URL) WHERE option_name = 'home' OR option_name = 'siteurl';
    UPDATE wp_posts SET guid = replace(guid, @old_URL, @new_URL);
    UPDATE wp_posts SET post_content = replace(post_content, @old_URL, @new_URL);