模拟工厂

create database Worker
go
use Worker
go

create table Worker
(
--
职工工号 int identity (1,1) not null,
职工姓名 char(20) not null,
职工性别 char(2) not null,
职工等级 int not null,
职工联系电话 text null,
职工家庭住址 text null
)

alter table Worker add constraint DF_Order default (1) for 职工等级
alter table Worker add constraint DF_Sex default ('男') for 职工性别
alter table Worker add constraint DF_Tell default ('88888') for 职工联系电话
alter table Worker add constraint DF_Add default ('未知') for 职工家庭住址

insert into Worker values ('zhangsan','n',1,null,null)
insert into Worker (职工姓名,职工性别,职工等级) values ('zhangming','n',default)

Select * from Worker

insert into Worker (职工姓名,职工性别,职工等级)
select 'liming','n',1 union
select 'xiaoming','n' ,2

Select * from Worker

select * into back from Worker
use model
go
--drop database Worker