Fatal error: Uncaught Exception: Error: Unknown column 'pdd.quantity' in 'order clause'<br />Error No: 1054<br />SELECT DISTINCT ps.product_id, (SELECT AVG(rating) FROM tek_review r1 WHERE r1.product_id = ps.product_id AND r1.status = '1' GROUP BY r1.product_id) AS rating FROM tek_product_special ps LEFT JOIN tek_product p ON (ps.product_id = p.product_id) LEFT JOIN tek_product_description pd ON (p.product_id = pd.product_id) LEFT JOIN tek_product_to_store p2s ON (p.product_id = p2s.product_id) WHERE p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '0' AND ps.customer_group_id = '1' AND ((ps.date_start = '0000-00-00' OR ps.date_start < NOW()) AND (ps.date_end = '0000-00-00' OR ps.date_end > NOW())) GROUP BY ps.product_id ORDER BY pdd.quantity > 0 DESC, p.sort_order ASC, LCASE(pd.name) ASC LIMIT 0,25 in /var/www/u1101163/data/www/aptekaaplus.ru/system/library/db/mysqli.php:41 Stack trace: #0 /var/www/u1101163/data/www/aptekaaplus.ru/system/library/db.php(45): DB\MySQLi->query('SELECT DISTINCT...') #1 /var/ww in /var/www/u1101163/data/www/aptekaaplus.ru/system/library/db/mysqli.php on line 41