在 SQL 查询中选择第 N 条记录 [英] Selecting Nth Record in an SQL Query

问题描述

我有一个正在运行的 SQL 查询，但我只想选择特定的行.例如，假设我的查询是:

I have an SQL Query that i'm running but I only want to select a specific row. For example lets say my query was:

Select * from Comments

假设这返回 10 行，我只想选择此查询返回的第 8 条记录.我知道我可以做到:

Lets say this returns 10 rows, I only want to select the 8th record returned by this query. I know I can do:

Select Top 5 * from Comments

要获取该查询的前 5 条记录，但我只想选择某条记录，是否可以在此查询中添加任何内容(类似于 top).

To get the top 5 records of that query but I only want to select a certain record, is there anything I can put into this query to do that (similar to top).

谢谢

杰克

推荐答案

这是一道经典的面试题.

This is a classic interview question.

在 Ms SQL 2005+ 中，您可以使用 ROW_NUMBER() 关键字并具有谓词 ROW_NUMBER = n

In Ms SQL 2005+ you can use the ROW_NUMBER() keyword and have the Predicate ROW_NUMBER = n

USE AdventureWorks;
GO
WITH OrderedOrders AS
(
    SELECT SalesOrderID, OrderDate,
    ROW_NUMBER() OVER (ORDER BY OrderDate) AS 'RowNumber'
    FROM Sales.SalesOrderHeader 
)  

SELECT * 
FROM OrderedOrders 
WHERE RowNumber = 5;

在 SQL2000 中你可以做类似的事情

In SQL2000 you could do something like

SELECT Top 1 *FROM
[tblApplications]
where [ApplicationID] In
(
    SELECT TOP 5 [ApplicationID]
    FROM [dbo].[tblApplications]
    order by applicationId Desc
)

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