获取某一行数据

比如：

 

复制代码DECLARE @t AS TABLE([Datas] NVARCHAR(40)) INSERT INTO @t ([Datas]) VALUES(N'DF'),(N'W4F'),(N'EYY'),(N'ER'),(N'GFF'),(N'A445') SELECT [Datas] FROM @t ORDER BY [Datas]

1
2
3
4
DECLARE @t AS TABLE([Datas] NVARCHAR(40))
INSERT INTO @t ([Datas]) VALUES(N'DF'),(N'W4F'),(N'EYY'),(N'ER'),(N'GFF'),(N'A445')

SELECT [Datas] FROM @t ORDER BY [Datas]

 

由于我们不清楚Datas数据内容，它是动态的内容。但是我们需要获取这表中的某一笔记录，那如何获取呢？

可以使用ROW_NUMBER方法来求得：

 

复制代码SELECT [Datas] FROM ( SELECT ROW_NUMBER() OVER (ORDER BY [Datas]) AS [RowNumber], [Datas] FROM @t) AS t WHERE [RowNumber] IN (2,5)

1
2
3
SELECT [Datas] FROM (
    SELECT ROW_NUMBER() OVER (ORDER BY [Datas]) AS [RowNumber], [Datas] FROM @t) AS t
WHERE [RowNumber] IN (2,5)

 

以下内容于2019-05-16 08:00:02.397更新：

使用CTE替代子查询。