Sql 如何查找组中的最后一条记录

以下是我的数据表：

+----------+--------------+--------+-------+---------------+-------------+--------+
| RegionID | ReceivedDate | FdNo   | FmNo  | FromRegionID  | ToRegionID  | HFlag  |
+----------+--------------+--------+-------+---------------+-------------+--------+
| 26       | 2014-04-10   | 104152 | 1     | 26            | 27          | 1      |
| 26       | 2014-04-10   | 104152 | 1     | 27            | 26          | 0      |
| 26       | 2014-04-10   | 104152 | 2     | 26            | 27          | 1      |
| 26       | 2014-04-10   | 104152 | 2     | 27            | 26          | 0      |
| 26       | 2014-04-10   | 104152 | 3     | 26            | 27          | 1      |
| 26       | 2014-04-10   | 104152 | 3     | 27            | 26          | 0      |
| 26       | 2014-04-10   | 104152 | 4     | 26            | 27          | 1      |
| 26       | 2014-04-10   | 104152 | 4     | 27            | 26          | 0      |
+----------+--------------+--------+-------+---------------+-------------+--------+

我想从每组fdNo中选择最后一条记录。在示例表中，我给出了重复计数为2的数据，在实际情况中可能是3,4，依此类推

预期产出：

我想将Ans查询附加到我的原始查询中，实际表是从该原始查询中生成的

原始查询：

SELECT tblreceipt.regionid, 
       tblreceipt.receiveddate, 
       tblreceipt.folderno, 
       tblreceipt.formno, 
       tbltransite.dispatchfromregionid, 
       tbltransite.dispatchtoregionid, 
       tbltransite.horeceivedflag 
FROM   tblreceipt 
       LEFT OUTER JOIN tbltransite 
                    ON tblreceipt.folderno = tbltransite.folderno 
WHERE  tblreceipt.folderno = 104152 

---

你能格式化你的表格结构吗？很难读懂。好的，我会试试的。。我是sof新手。最后基于什么？日期，一些主键。一般来说，您可以在这种查询中使用row_number over。如果您提供所需的输出，其他成员可以帮助您更好地使用104152的最后一条记录和1个类似的组合…不@meysam tolouee，它不希望只显示1条记录，如果我的表包含200条记录，我希望有100条记录，其中rn=1，而不是选择top 1。。。order by？我为RN的最大值与cte进行了内部连接，它的工作方式是从cte c1内部连接选择*从cte组中选择MAXRn作为RN按FolderNo，c1上的FormNo c2。RN=c2。RN按c1进行顺序。FolderNo，c1.FormNo

SELECT tblreceipt.regionid, 
       tblreceipt.receiveddate, 
       tblreceipt.folderno, 
       tblreceipt.formno, 
       tbltransite.dispatchfromregionid, 
       tbltransite.dispatchtoregionid, 
       tbltransite.horeceivedflag 
FROM   tblreceipt 
       LEFT OUTER JOIN tbltransite 
                    ON tblreceipt.folderno = tbltransite.folderno 
WHERE  tblreceipt.folderno = 104152 

With CTE As (
select  tblReceipt.RegionID,
        tblReceipt.ReceivedDate, 
        tblReceipt.FolderNo,
        tblReceipt.FormNo,
        tblTransite.DispatchFromRegionID,
        tblTransite.DispatchToRegionID,
        tblTransite.HOReceivedFlag,
        Row_Number() Over(Order By FmNo, HFlag) A Rn
        from     tblReceipt
                      left outer join
                 tblTransite
                      on tblReceipt.FolderNo = tblTransite.FolderNo
        where    tblReceipt.FolderNo = 104152
        )
        Select Top 1 From CTE Order By Rn Desc