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-chien-thang-15-tan-1500-kg-ct150tl1-246' and id_list= and id_cat= order by stt asc