根據另一列的日期字段獲取結果

以下sql server 2005查詢當前正在成功運行。我需要修改「p.Tx_Intent」以基於同一個表中的日期列「p.Eff_DtTm」進行顯示，因此它只顯示患者的最新Tx_Intent（Eff_DtTm）。根據另一列的日期字段獲取結果

WITH T AS 
(SELECT s.Pat_Name, s.IDA, s.Pat_ID1, p.Tx_Intent, 
    ShortDesc = MAX(CASE WHEN s.SysDefStatus = 'SC' THEN s.Short_Desc END), 
    Consult = MAX(CASE WHEN s.Activity = '123' 
         AND s.SysDefStatus = 'C' THEN s.App_DtTm END), 
    SIM = MAX(CASE WHEN s.Activity = '456' 
          THEN s.App_DtTm END), 
    PLANNING = MAX(CASE WHEN s.Activity = '789' 
          THEN s.App_DtTm END), 
    TreatmentStart = MAX(CASE WHEN s.SysDefStatus = 'SC' THEN s.App_DtTm END), 
    TreatmentFinished = MAX(CASE WHEN s.SysDefStatus = 'FC' THEN s.App_DtTm END) 
FROM vw_Schedule s 
LEFT OUTER JOIN PatCPlan p 
ON s.Pat_ID1=p.Pat_ID1 
WHERE s.Activity IN ('123', '456', '789') 
OR  s.SysDefStatus IN ('SC', 'FC', 'C') 

GROUP BY s.Pat_Name, s.IDA, s.Pat_ID1, p.Tx_Intent 

) 


SELECT Pat_Name, 
IDA, 
    Tx_Intent, 
    ShortDesc, 
    Consult, 
    Days = (DATEDIFF(dd, Consult, SIM)+1)-(DATEDIFF(wk, Consult, SIM)*2), 
    SIM, 
    Days = (DATEDIFF(dd, SIM, PLANNING)+1)-(DATEDIFF(wk, SIM, PLANNING)*2), 
    PLANNING, 
    Days = (DATEDIFF(dd, PLANNING, TreatmentStart)+1)-(DATEDIFF(wk, PLANNING, TreatmentStart)*2), 
    TreatmentStart, 
    Days = (DATEDIFF(dd, TreatmentStart, TreatmentFinished)+1)-(DATEDIFF(wk, TreatmentStart, TreatmentFinished)*2), 
    TreatmentFinished 
FROM T;

好吧，所以我想出了一種方法來確定最新的日期，我只是有問題結合它與我目前的查詢。這裏是查詢我需要結合頂部查詢

SELECT Pat_ID1, Tx_Intent from (select 
     Pat_ID1 
     ,Tx_Intent 
     ,Eff_DtTm 
     ,row_number() over (partition by Pat_ID1 order by abs(datediff(dd, Eff_DtTm,  getdate()))) Ranking 
    from PatCPlan) xx 
where Ranking = 1

感謝您的幫助！

來源

2013-10-10 user2861854

您的原始查詢可能並不是一次完成，而是逐漸增長。如果我是你，我會採用同樣的方法，使用你發現的查詢作爲基礎，並圍繞它建立新的查詢。如果你堅持保留舊的查詢，並以某種方式將新的查詢「交織」到其中，試着瞭解它是如何工作的，這應該有所幫助（假設你非常清楚你現在的查詢是如何工作的）。 –

我似乎只能得到它一次顯示1個結果：\ – user2861854

不能完全確定，但這裏有雲：

WITH PatCPlanRanked AS ( SELECT Pat_ID1, Tx_Intent, Ranking = ROW_NUMBER() OVER (PARTITION BY Pat_ID1 ORDER BY Eff_DtTm DESC) FROM PatCPlan ), 
T AS 
(SELECT s.Pat_Name, s.IDA, s.Pat_ID1, p.Tx_Intent, 
    ShortDesc = MAX(CASE WHEN s.SysDefStatus = 'SC' THEN s.Short_Desc END), 
    Consult = MAX(CASE WHEN s.Activity = '123' 
         AND s.SysDefStatus = 'C' THEN s.App_DtTm END), 
    SIM = MAX(CASE WHEN s.Activity = '456' 
          THEN s.App_DtTm END), 
    PLANNING = MAX(CASE WHEN s.Activity = '789' 
          THEN s.App_DtTm END), 
    TreatmentStart = MAX(CASE WHEN s.SysDefStatus = 'SC' THEN s.App_DtTm END), 
    TreatmentFinished = MAX(CASE WHEN s.SysDefStatus = 'FC' THEN s.App_DtTm END) 
FROM vw_Schedule s 
LEFT OUTER JOIN PatCPlanRanked p 
ON s.Pat_ID1=p.Pat_ID1 AND p.Ranking = 1 
WHERE s.Activity IN ('123', '456', '789') 
OR  s.SysDefStatus IN ('SC', 'FC', 'C') 

GROUP BY s.Pat_Name, s.IDA, s.Pat_ID1, p.Tx_Intent 

) 


SELECT Pat_Name, 
IDA, 
    Tx_Intent, 
    ShortDesc, 
    Consult, 
    Days = (DATEDIFF(dd, Consult, SIM)+1)-(DATEDIFF(wk, Consult, SIM)*2), 
    SIM, 
    Days = (DATEDIFF(dd, SIM, PLANNING)+1)-(DATEDIFF(wk, SIM, PLANNING)*2), 
    PLANNING, 
    Days = (DATEDIFF(dd, PLANNING, TreatmentStart)+1)-(DATEDIFF(wk, PLANNING, TreatmentStart)*2), 
    TreatmentStart, 
    Days = (DATEDIFF(dd, TreatmentStart, TreatmentFinished)+1)-(DATEDIFF(wk, TreatmentStart, TreatmentFinished)*2), 
    TreatmentFinished 
FROM T;

我做了一個改變你Ranking表達：ROW_NUMBER函數的OVER子句中，我改變了

ORDER BY ABS(DATEDIFF(dd, Eff_DtTm, GETDATE()))

到更多sargable

ORDER BY Eff_DtTm DESC

這相當於你的版本僅當Eff_DtTm永遠不會晚於GETDATE()。但是，我認爲是因爲你對病人

，你的表情表達你的意圖爲（加上強調）

所以它只顯示最新 Tx_Intent（Eff_DtTm）的情況下只有在上述假設下才能達到這一目的。

來源

2013-10-11 06:01:43

絕對傳說！ – user2861854

哦，你太客氣了，謝謝！ –

根據另一列的日期字段獲取結果

回答

相關問題