数据库自增长的插入：
1
子增长的插入
2
/*创建表*/
3create table teacher
4(
5 id int identity(1,1) primary key not null,
6 name varchar(20)
7)
8
9select * from teacher
10
11/*关闭自增长*/
12SET IDENTITY_INSERT teacher on
13
14insert into teacher(id,name) values(2000,'guo')
15
16/*打开自增长*/
17SET IDENTITY_INSERT teacher off
18
19insert into teacher(name) values('guo')
子增长的插入2
/*创建表*/
3
create table teacher4
(5
id int identity(1,1) primary key not null,6
name varchar(20)7
)8
9
select * from teacher10
11
/*关闭自增长*/12
SET IDENTITY_INSERT teacher on 13
14
insert into teacher(id,name) values(2000,'guo')15
16
/*打开自增长*/17
SET IDENTITY_INSERT teacher off 18
19
insert into teacher(name) values('guo') 
