Invalid MySQL query: 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND b.aktiv ORDER BY a.sort' at line 4

SELECT b.id AS bildid, b.bild
                      FROM produkt_bilder_hub AS a
                      LEFT JOIN produkt_bilder AS b ON ( a.produkt_bilder_id = b.id )
                      WHERE a.produkt_id= AND b.aktiv
                      ORDER BY a.sort