如何将 ROW_NUMBER() 分配给一列?

本文介绍了如何将 ROW_NUMBER() 分配给一列?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

阅读这个问题后，我还有一个类似的问题.有没有一种简单的方法可以让这个 SQL 语句起作用?

After reading this question, I have another similar question. Is there a simple way to get this SQL statement to work?

update [Insurances] set [RowNo]=ROW_NUMBER() over (order by [RowNo])

我有一个 RowNo 列，我想在删除记录时更新该列.

I have a RowNo column which I want to update whenever a record is deleted.

推荐答案

UPDATE t1
SET t1.RowNo = s.RowNo
FROM  [Insurances] t1
INNER JOIN
(
     SELECT Id, ROW_NUMBER() OVER( ORDER BY Somefield DESC) RowNo
     FROM Insurances
) s ON t1.Id = s.Id

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