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-ban-tai-kenbo-2-cho-950kg-xe-tai-van-kenbo-2-cho-ngoi-754' and id_list= and id_cat= order by stt asc