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 id_cat= order by stt asc' at line 1syntax error: select * from table_product_item where hienthi=1 and tenkhongdau='xe-tron-be-tong-dongfeng-hoang-gia-l340-9m3-320' and id_list= and id_cat= order by stt asc