当自增ID重复的时候在SQL ERRORLOG里不会有记录 2014-7-28

当自增ID重复的时候在SQL ERRORLOG里不会有记录 2014-7-28

USE [test]
--DROP TABLE testindentity
CREATE TABLE testindentity(id INT IDENTITY(1,1) PRIMARY KEY,name NVARCHAR(200))

INSERT INTO testindentity
SELECT 'ni' UNION ALL
SELECT 'lo'

SELECT * FROM testindentity

SET IDENTITY_INSERT testindentity ON
INSERT INTO testindentity(id,name)
SELECT 2,'opopo' 
SET IDENTITY_INSERT testindentity OFF

DBCC CHECKIDENT(testindentity,RESEED,1)

INSERT INTO testindentity(name)
SELECT 'opopo'

结果，不会报错，但是自增值会从1000开始

id name
1 ni
2 lo
1002 opopo

再改一下种子值

DBCC CHECKIDENT(testindentity,RESEED,1)

INSERT INTO testindentity(name)
SELECT 'dfdfdf'

 

 

 

马上报错

消息 2627，级别 14，状态 1，第 1 行
违反了 PRIMARY KEY 约束“PK__testinde__3213E83F92F3B59B”。不能在对象“dbo.testindentity”中插入重复键。重复键值为 (2)。

EXEC sys.[sp_readerrorlog]