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-199-tan-xe-tai-jac-199-tan-1990-kg-n721-ld141-142' and id_list= and id_cat= order by stt asc