如果想给自增列赋值，需要如下设置
set Identity_insert [tb1] on
GO
INSERT INTO [dbo].[tb1]
([ID],[Name]
,[ClassName])
VALUES
(4,‘zhangsan‘
,‘一班‘)
GO
set Identity_insert [tb1] off
SqlServer如何给自增列赋值（SET IDENTITY_INSERT ON）
原文：https://www.cnblogs.com/fanfan-90/p/12520174.html