如何以编程方式更改标识列的值? [英] How to change identity column values programmatically?

问题描述

我有一个MS SQL 2005数据库，该数据库的表Test的列为ID. ID是一个标识列.

I have a MS SQL 2005 database with a table Test with column ID. ID is an identity column.

此表中有行，并且所有行都有其对应的ID自动递增值.

I have rows in this table and all of them have their corresponding ID auto incremented value.

现在，我想像这样更改此表中的每个ID:

Now I would like to change every ID in this table like this:

ID = ID + 1

但是当我这样做时，我得到一个错误:

But when I do this I get an error:

无法更新标识列"ID".

Cannot update identity column 'ID'.

我已经尝试过了:

    ALTER TABLE Test NOCHECK CONSTRAINT ALL 
    set identity_insert ID ON

但这不能解决问题.

我需要在此列设置标识，但是我还需要不时更改值.所以我的问题是如何完成这项任务.

I need to have identity set to this column, but I need to change values as well from time to time. So my question is how to accomplish this task.

推荐答案

您需要

set identity_insert YourTable ON

然后删除您的行并以其他身份重新插入.

Then delete your row and reinsert it with different identity.

完成插入操作后，别忘了关闭identity_insert

Once you have done the insert don't forget to turn identity_insert off

set identity_insert YourTable OFF

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