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我在 SQL Server 中有表。我想在每个组中找到最后一行。我尝试了以下查询，但它没有返回确切的结果。ID 列是 PK，其他列设置为 NOT NULL。

select ID, Name FROM 
(select ID, Name, max(ID) over (partition by Name) as MAX_ID
from Customer) x where ID= MAX_ID

要更清楚。我有 2 个查询。首先：

ALTER PROCEDURE [dbo].[Ramiz_Musterija_RowNum]
@Datum DATE,
@BrojKamiona INT
AS SET NOCOUNT ON
SELECT Ime,MusterijaID,RowNum=ROW_NUMBER() OVER(ORDER BY Ime)FROM Musterije
WHERE Datum=@Datum AND BrojKamiona=@BrojKamiona  GROUP BY Ime,MusterijaID

第二个：

ALTER PROCEDURE [dbo].[Ramiz_Musterija_FindLast]
@Datum DATE,
@BrojKamiona INT
AS SET NOCOUNT ON
SELECT a.* from Musterije a
JOIN (SELECT Ime, MAX(MusterijaID) AS MAXID FROM Musterije GROUP BY Ime) AS b 
ON a.MusterijaID = b.MAXID AND a.Datum=@Datum AND a.BrojKamiona=@BrojKamiona

然后 LINQ 查询：

  var rowNumList = from f in customerFindLastList
                     join r in customerRowNumList
                     on f.MusterijaID equals r.MusterijaID
                     select new { r.RowNum };

我试图在每一行中找到最后一行，然后在 MusterijaID 列上匹配这两个查询。对此的任何帮助将不胜感激。这是一组的输出。现在，问题是这两个查询在“4250” MusterijaID 上匹配，但我需要在“4229”上匹配查询。

Ime MusterijaID
100//1  4246
100//1  4247
100//1  4248
100//1  4249
100//1  4250
100//1  4229
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1 回答 1

10 
select ID, Name 
FROM (select ID, Name, -- add other columns here
             ROW_NUMBER() over (partition by Name ORDER BY ID DESC) as MAX_ID
      from Customer) x
WHERE MAX_ID = 1
于 2013-03-22T13:25:25.187 回答