You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'and-sale-of-housing-registers-its-best-semester-since-2008)' at line 3<hr>
    SELECT new
    FROM news_news_categories
    WHERE cat IN (4,13,19,20,21,the-purchase-and-sale-of-housing-registers-its-best-semester-since-2008)