Sql Server 表创建以及Ef浅谈

use eftest
go
if exists(select * from sysobjects where name=‘UserInfo‘)
drop table UserInfo
create table UserInfo(
  ID int identity(1,1) primary key,
  UserName nvarchar(100) not null,
  Sex char(1) default ‘男‘,
  age int  
)
go

use eftest
go
if exists (select * from sysobjects where name=‘OrderInfo‘)
drop table OrderInfo
create table OrderInfo
(
    ID int identity(1,1) primary key,
    UserID int not null ,
    ThinName nvarchar(100) not null    
    )
go    
    
alter table OrderInfo
add constraint OrderInfo_fk_UserInfo foreign key(UserID) references UserInfo(ID)    
select OrderInfo_fk_UserInfo