... SOHOADON, TENHANG, CHITIETDATHANG.SOLUONG*GIABAN*(1-MUCGIAMGIA/100) AS 'SỐ TIỀN PHẢI TRẢ'FROM MATHANG, CHITIETDATHANGWHERE MATHANG.MAHANG=CHITIETDATHANG.MAHANG AND CHITIETDATHANG.SOHOADON=3 ... TENHANGFROM KHACHHANG, DONDATHANG, MATHANG, CHITIETDATHANGWHERE KHACHHANG.MAKHACHHANG=DONDATHANG.MAKHACHHANG AND DONDATHANG.SOHOADON=CHITIETDATHANG.SOHOADON AND CHITIETDATHANG.MAHANG=MATHANG.MAHANG ... (lương=lương cơ INSERT INTO CHITIETDATHANG VALUES(3, 'MM02', 500000, 30, 20000);INSERT INTO CHITIETDATHANG VALUES(2, 'MM02', 500000, 20, 20000);INSERT INTO CHITIETDATHANG VALUES(2,...