使所有行都有单调的字段

Question

我的sql server数据库中有表，我想将其转换为PK列

为此，我想将此列中每行的值更改为1,2,3 ...

你能为该任务编写T-Sql查询吗？

感谢您的帮助

开始状态：

Id | Name |
----------
1  | One  |
2  | Two  |
2  | Three|
x  | xxx  |

结果：

Id | Name |
----------
1  | One  |
2  | Two  |
3  | Three|
4  | xxx  |

Answer 1

;with cte as
(
SELECT Id, ROW_NUMBER() over (order by Id) as rn
from YourTable
)
UPDATE cte SET Id = rn

Answer 2

如果你没有id，你也可以用名字来做它！

;with cte as
(
SELECT Id, ROW_NUMBER() over (order by name) as rn
from YourTable
)
UPDATE cte SET Id = rn