关系 1 到 n
Relationship 1 to n
create database shop1
use shop1
create table mathang
(
MatHangID INT primary key not null,
TenMatHang varchar(50),
SoLuong int not null,
Price int not null,
)
create table nhacungcap
(
MatHangID INT foreign key references mathang,
TenNhaCungCap varchar(50) ,
DiaChi varchar(100),
SoDienThoai int ,
CONSTRAINT pk_M_CC primary key (MatHangID)
)
create table khachhang
(
KhachHangID int not null primary key,
TenKhachHang varchar(50) not null,
[DiaChi] varchar(100) not null,
[SoDienThoai] varchar(50) not null,
)
create table donhang
(
DonHangID int references to khachhang(KhachHangID),
TenDonHang varchar(50),
SoLuong int,
CONSTRAINT pk_DHID primary key (DonHangID)
)
我找不到这个错误,它显示添加这个关系船的外键错误。有哪位大侠帮忙啊
删除
中的to
...
DonHangID int references to khachhang(KhachHangID)
...
获得
...
DonHangID int references khachhang(KhachHangID)
...
。 to
在语法上不属于那里。
create database shop1
use shop1
create table mathang
(
MatHangID INT primary key not null,
TenMatHang varchar(50),
SoLuong int not null,
Price int not null,
)
create table nhacungcap
(
MatHangID INT foreign key references mathang,
TenNhaCungCap varchar(50) ,
DiaChi varchar(100),
SoDienThoai int ,
CONSTRAINT pk_M_CC primary key (MatHangID)
)
create table khachhang
(
KhachHangID int not null primary key,
TenKhachHang varchar(50) not null,
[DiaChi] varchar(100) not null,
[SoDienThoai] varchar(50) not null,
)
create table donhang
(
DonHangID int references to khachhang(KhachHangID),
TenDonHang varchar(50),
SoLuong int,
CONSTRAINT pk_DHID primary key (DonHangID)
)
我找不到这个错误,它显示添加这个关系船的外键错误。有哪位大侠帮忙啊
删除
中的to
...
DonHangID int references to khachhang(KhachHangID)
...
获得
...
DonHangID int references khachhang(KhachHangID)
...
。 to
在语法上不属于那里。