僅返回數據集中的最新記錄

我有一個查詢返回多個日期的數據。僅返回數據集中的最新記錄

我想與在該領域的最近日期只返回記錄SAPOD（日期其實CYYMMDD其中C = 2000和1 2000年後0之前和YYYYMMDD使用SAPOD=Case when LEFT(SAPOD,1)=1 then '20' else '19' end + SUBSTRING(cast(sapod as nvarchar(7)),2,7)我可以證明這一點）

這裏是我的查詢：

SELECT GFCUS, Ne.NEEAN, SCDLE, SAPOD, SATCD,CUS.GFCUN, BGCFN1, 
    BGCFN2, BGCFN3, SV.SVCSA, SV.SVNA1, SV.SVNA2, SV.SVNA3, 
    SV.SVNA4, SV.SVNA5, SV.SVPZIP, SV.NONUK 
FROM SCPF ACC 
    INNER JOIN GFPF CUS ON GFCPNC = SCAN 
    LEFT OUTER JOIN SXPF SEQ ON SXCUS = GFCUS AND SXPRIM = '' 
    LEFT OUTER JOIN SVPFClean SV ON SVSEQ = SXSEQ 
    LEFT OUTER JOIN BGPF ON BGCUS = GFCUS AND BGCLC = GFCLC 
    LEFT OUTER JOIN NEPF NE ON SCAB=NE.NEAB and SCAN=ne.NEAN and SCAS=ne.NEAS 
    LEFT OUTER JOIN SAPF SA ON SCAB=SAAB and SCAN=SAAN and SCAS=SAAS 
WHERE 
    (SATCD>500 and 
    scsac='IV' and 
    scbal = 0 and 
    scai30<>'Y' and 
    scai14<>'Y' and 
    not exists(select * from v5pf where v5and=scan and v5bal<>0)) 
GROUP BY GFCUS, Ne.NEEAN, SCDLE, SAPOD, SATCD, 
    CUS.GFCUN, BGCFN1, BGCFN2, BGCFN3, SV.SVCSA, 
    SV.SVNA1, SV.SVNA2, SV.SVNA3, SV.SVNA4, SV.SVNA5, SV.SVPZIP, SV.NONUK 
ORDER BY MAX(SCAN) ASC, SAPOD DESC

我得到的結果類似下面那裏有一個客戶聯繫多次交易，而我們只想顯示最近的交易數據：

picture of results in Excel

那麼我怎樣才能顯示最近的交易？這是我應該使用OUTER APPLY還是CROSS APPY？

編輯：

對不起，我要澄清，我需要的最近的每個領域NEEAN獨特的記錄日期是帳戶數

來源

2014-09-12 Our Man in Bananas

我覺得您所有的查詢需求是'極限1'。糟糕SqlServer警報！取而代之的是「Top 1」。 – venkatKA 2014-09-12 11:06:21

我想這會是'SELECT TOP 1 ...' – Bulat 2014-09-12 11:07:33

你能提供樣本數據和預期結果 – Bulat 2014-09-12 11:10:54

您可以使用ROW_NUMBER（）如下：

SELECT 
    ROW_NUMBER() OVER (PARTITION BY Ne.NEEAN ORDER BY SAPOD DESC) AS [Row], 
    GFCUS, Ne.NEEAN, SCDLE, SAPOD, SATCD,CUS.GFCUN, BGCFN1, 
    BGCFN2, BGCFN3, SV.SVCSA, SV.SVNA1, SV.SVNA2, SV.SVNA3, 
    SV.SVNA4, SV.SVNA5, SV.SVPZIP, SV.NONUK 
FROM SCPF ACC 
    INNER JOIN GFPF CUS ON GFCPNC = SCAN 
    LEFT OUTER JOIN SXPF SEQ ON SXCUS = GFCUS AND SXPRIM = '' 
    LEFT OUTER JOIN SVPFClean SV ON SVSEQ = SXSEQ 
    LEFT OUTER JOIN BGPF ON BGCUS = GFCUS AND BGCLC = GFCLC 
    LEFT OUTER JOIN NEPF NE ON SCAB=NE.NEAB and SCAN=ne.NEAN and SCAS=ne.NEAS 
    LEFT OUTER JOIN SAPF SA ON SCAB=SAAB and SCAN=SAAN and SCAS=SAAS 
WHERE 
    (SATCD>500 and 
    scsac='IV' and 
    scbal = 0 and 
    scai30<>'Y' and 
    scai14<>'Y' and 
    not exists(select * from v5pf where v5and=scan and v5bal<>0)) and 
    [Row] = 1 
GROUP BY GFCUS, Ne.NEEAN, SCDLE, SAPOD, SATCD, 
    CUS.GFCUN, BGCFN1, BGCFN2, BGCFN3, SV.SVCSA, 
    SV.SVNA1, SV.SVNA2, SV.SVNA3, SV.SVNA4, SV.SVNA5, SV.SVPZIP, SV.NONUK 
ORDER BY MAX(SCAN) ASC

如果您不想返回[Row]列，可以將其封裝在子查詢中。

來源

2014-09-12 11:17:23

對不起，我應該澄清一點，我需要在'NEEAN'字段中的每個唯一記錄的最近日期，這是帳號 – 2014-09-12 11:21:09

@菲利普修正答案使用ROW_NUMBER（） – 2014-09-12 11:30:21

我認爲它必須封裝在一個子查詢或派生表，否則有一個*無效列[行] *編譯e error – 2014-09-12 11:31:32

您可以將用戶ROW_NUMBER讓每個客戶

前1行的where子句需要返回與POS值值1個

樣本查詢

row_number() over (partition by GFCUS order by SAPOD desc) as pos

來源

2014-09-12 11:42:08 radar

僅返回數據集中的最新記錄

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