SQL查詢錯誤有助於解決

Question

create database MC120203207 

create table employee 
(
    id varchar (15) not null, 
    Name nvarchar (50) not null, 
    Address nvarchar (75) not null, 
    DoB date not null, 
    primary key(id) 
); 

create table Payroll 
(
    id varchar (10)not null, 
    Allowances float not null, 
    Msalary float not null, 
    References employee(id), 
    primary key(id) 
); 

create table Hourly 
( 
    id varchar (10)not null, 
    HourlyRate float not null, 
    References employee(id), 
    primary key (id) 
); 

Create Table Projects 
(
    id varchar (10) not null, 
    Code int (10) not null, 
    Description varchar (50) not null, 
    primary key (code) 
); 

Insert into employee (id, name, address, DoB) values ('MC120203207', 'Aurang Zeb Khan', 'Bannu', 27-02-1980) 
Insert into employee (id, name, address, DoB) values ('BC120201875', 'Alam Zeb Khan', 'Bannu', 02-08-1992) 

有在查詢一個問題，請大家幫忙解決它......它顯示的信息

消息142，級別15，狀態2,0行
'TABLE'約束定義的語法不正確。

Msg 142，Level 15，State 2，Line 0
定義'TABLE'約束的語法不正確。

Answer 1

你需要對你的表一列引用employee.id - 只是寫references employee(id)僅靠不夠的！。

，請注意一個事實，即你Payroll（或Hourly）定義外鍵列必須有的完全相同的的數據類型爲你引用的列。

試試這個：

create table Payroll 
(
    id varchar (10)not null, 
    Allowances float not null, 
    Msalary float not null, 
    employeeId varchar(15) references employee(id), 
    primary key(id) 
);