如何手动插入标识？

Question

CREATE TABLE masterTbl (
id INT IDENTITY(1,1) CONSTRAINT pk_id PRIMARY KEY,
name VARCHAR(100))

INSERT INTO masterTbl VALUES ('ABC', 'XYZ','PQR')

现在

Select * FROM masterTbl

结果:

id  | name
---------------------
1 |  ABC
2 |  XYZ
3 |  PQR

DELETE FROM masterTbl WHERE id=1

现在

Select * FROM masterTbl

结果:

id |  name
---------------------
2 |  XYZ
3 |  PQR

现在我想跑:

INSERT INTO masterTbl (id, name) VALUES (1, 'MNO')

这怎么可能？

Answer 1

在它最简单的形式中,您需要暂时允许插入标识值

SET IDENTITY_INSERT masterTbl ON
INSERT INTO masterTbl (id, name) VALUES (1, 'MNO')
SET IDENTITY_INSERT masterTbl OFF

Answer 2

是的,您可以设置手动执行的标识字段

SET IDENTITY_INSERT masterTbl ON

然后插入您的数据

INSERT INTO masterTbl (id, name) VALUES (1, 'MNO') 
......

并记得打电话

SET IDENTITY_INSERT masterTbl OFF

重新启用正确的功能

Answer 3

SET IDENTITY_INSERT masterTbl ON