获取TSQL中分组记录的ID

SQL

SELECT ID, AtDate, ItemID, StorageID, TargetItemDocDetailID 
FROM   dbo.ItemBalanceRegisters 

SELECT  MAX(AtDate) as AtDate, ItemID, StorageID, TargetItemDocDetailID
FROM  dbo.ItemBalanceRegisters S       
GROUP BY ItemID, StorageID, TargetItemDocDetailID

输出

 ID,                                       AtDate,                    ItemID, StorageID, TargetItemDocDetailID 

 B363E263-F38B-478F-B8BF-92A0B4C0C11D   2020-05-15 09:41:01.7530061   1   6    NULL

 48EF1748-5459-491E-A84F-AEBF46145217       2020-05-15 11:05:18.7743409   1   9    NULL

 19255F6A-C868-4DEA-8785-D4EF5005B824       2020-05-15 10:24:07.9138724   1   6    NULL

我只需要从每个组中获取具有唯一文件名：

ItemID、StorageID、TargetItemDocDetailID

和MAX（）date的记录 但是我还需要获得

ID

if组中的记录

所以我的SQL

SELECT ID, AtDate, ItemID, StorageID, TargetItemDocDetailID 
FROM   dbo.ItemBalanceRegisters 

SELECT  MAX(AtDate) as AtDate, ItemID, StorageID, TargetItemDocDetailID
FROM  dbo.ItemBalanceRegisters S       
GROUP BY ItemID, StorageID, TargetItemDocDetailID

返回

 2020-05-15 10:24:07.9138724    1   6   NULL

 2020-05-15 11:05:18.7743409    1   9   NULL

这很好，但我需要查看记录的

ID

那么如何将

ID

也导入到我的SQL中

 2020-05-15 10:24:07.9138724    1   6   NULL   19255F6A-C868-4DEA-8785-D4EF5005B824

 2020-05-15 11:05:18.7743409    1   9   NULL   48EF1748-5459-491E-A84F-AEBF46145217

使用beloe查询

SELECT ID,AtDate,ItemID,StorageID,TargetItemDocDetailID
FROM 
(
    SELECT ROW_NUMBER() OVER(Partition BY ItemID, StorageID, TargetItemDocDetailID ORDER BY AtDate DESC) AS RN,*
    FROM TABLE_NAME
)T
WHERE RN=1

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您可以在解决方案帮助下面的派生表检查中使用加重函数

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使用

行号