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 '-9,9' at line 1syntax error: select id,ten as ten,tenkhongdau,thumb,photo,masp,gia,giakm,type,khoihanhtu,thoigian,ngaykhoihanh,lichtrinhtour,giatour,lichkhoihanh,phuongtien,khachsan FROM table_product where  type='tour-nuoc-ngoai' and hienthi=1 order by stt,id desc limit -9,9