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-tai-veam-star-730kg-thung-lung-2320-x-1410-x-335-mm-716' and id_list= and id_cat= order by stt asc