どのように私は内部結合のSQLを使用してSQLで重複レコードを排除する

Question

投稿を介して行ってきましたが、まだ私は同じことをすることができません。誰かが私を共有してくださいいくつかのアイデアを持ってください。

SELECT DISTINCT 
    TR.Id as Travel_RequestId, 
    TREP.FirstName+' '+TREP.LastName as [Traveler Name], 
    TR.EmployeeNo, 
    TR.RequestNO, 
    TravelType=(case TR.IsOneWay 
    when '1' THEN 'OW' 
    ELSE 'RT' 
    END), 
    TRPD.SWONCode, 
    cast(TRD.GESSReceivedDate as date) as GESSReceivedDate, 
    TRD.Deal, 
    TRD.AirLineCode, 
    cast(TRD.DepartureDate as date) as Departure_Date, 
    cast(TRD.TentativeReturnDate as date) as Tentative_Return_Date, 
    cast(TRTD.IssuanceDate as Date) as Tcket_IssuanceDate, 
    TRTD.DeskName, 
    (select Description from AirlineName where Code=TRD.AirlineNameCode) as Airline, 
    (select Description from Currency where Code=TRID.CurrencyTypeCode) as CurrencyType, 
    case when (isnumeric(TRTD.BaseFare) & isnumeric(TRTD.ServiceFee)) =1 then 
    (convert(float, TRTD.BaseFare)+convert(float, TRTD.ServiceFee)) 
    else 
    null 
    end as TicketAmount, 
    TRTD.Number As [Ticket Number], 
    TRTD.AgentName, 
    cast(TRID.IssueDate as date) As InvoiceDate, 
    cast(TRID.CreditNoteDate as date) as CreditNoteDate, 
    TRID.CreditNoteNumber, 
    TRID.CreditNoteAmount, 
    TRID.AmountPayable, 
    TRTD.TotalFare, 
    TRTD.DeskName, 
    TRID.InvoiceAmount, 
    TRID.InvoiceNumber, 
    TRID.CurrencyTypeCode, 
    TRID.AdcolAmount, 
    TRID.ChqNo, 
    TM.Description as Travel_Mode, 

    TRID.Statement, 

    TRD.Sector As Itineary, 
    TRD.ServiceClass As ClassOfTravel 

    from TravelRequest TR LEFT JOIN(SELECT mt.*  
    FROM TravelRequestDetails mt INNER JOIN 
(
    SELECT travelrequestId, MIN(DepartureDate) DepartureDate 
    FROM TravelRequestDetails 
    GROUP BY travelrequestId 
) t ON mt.travelrequestId = t.travelrequestId AND mt.DepartureDate = t.DepartureDate)TRD ON TRD.TravelRequestId =TR.Id 

    left join TravelRequestEmployeeProfile TREP 
    on TREP.TravelRequestId=TRD.TravelRequestId 
    left join TravelRequestProjectDetails TRPD 
    on TRPD.TravelRequestId=TRD.TravelRequestId 
    left join TravelMode TM 
    on TM.Code=TRPD.TravelModeCode 
    left join TravelRequestTicketDetails TRTD 
    on TRTD.TravelRequestId=TRD.TravelRequestId 
    left join TravelRequestInvoiceDetails TRID 
    on TRID.TravelRequestId=TRD.TravelRequestId 
    where TR.Status='CL' and TR.RequestType='BT' 
    and TR.UpdatedOn Between DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()-1), 0) + '18:01' 
      AND DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()), 0) + '18:00' order by [Traveler Name] 

私はヌルレコードを削除する必要がP/oを下に取得しています：以下

は、スクリーンショットであると私はノー強調表示行の要求に基づいて重複を削除する必要があります

Answer 1

これで、SQLはデータの重複行を削除して削除するよう指示しています。ただし、IDに基づいてのみ重複が返されます。

これはあなたのデータで動作するかどうかをチェックする必要がありますが、外側の選択ではID以外のすべてを集約に変更することができます。他のすべての列でMAXを実行し、次にIDフィールドでGROUP BYを実行すると、IDごとに1行、残りの列から最大値が得られます。提供されたデータでは、これはあなたの後ろのものを与えるだろうが、コードを実際にライブする前に正しい結果が得られているかどうかを完全なデータセットで確認してください。

Answer 2

各Travel_RequestIdだけあなたがgroup by

with cte as 
(SELECT DISTINCT 
    TR.Id as Travel_RequestId, 
    TREP.FirstName+' '+TREP.LastName as [Traveler Name], 
    TR.EmployeeNo, 
    TR.RequestNO, 
    TravelType=(case TR.IsOneWay 
    when '1' THEN 'OW' 
    ELSE 'RT' 
    END), 
    TRPD.SWONCode, 
    cast(TRD.GESSReceivedDate as date) as GESSReceivedDate, 
    TRD.Deal, 
    TRD.AirLineCode, 
    cast(TRD.DepartureDate as date) as Departure_Date, 
    cast(TRD.TentativeReturnDate as date) as Tentative_Return_Date, 
    cast(TRTD.IssuanceDate as Date) as Tcket_IssuanceDate, 
    TRTD.DeskName, 
    (select Description from AirlineName where Code=TRD.AirlineNameCode) as Airline, 
    (select Description from Currency where Code=TRID.CurrencyTypeCode) as CurrencyType, 
    case when (isnumeric(TRTD.BaseFare) & isnumeric(TRTD.ServiceFee)) =1 then 
    (convert(float, TRTD.BaseFare)+convert(float, TRTD.ServiceFee)) 
    else 
    null 
    end as TicketAmount, 
    TRTD.Number As [Ticket Number], 
    TRTD.AgentName, 
    cast(TRID.IssueDate as date) As InvoiceDate, 
    cast(TRID.CreditNoteDate as date) as CreditNoteDate, 
    TRID.CreditNoteNumber, 
    TRID.CreditNoteAmount, 
    TRID.AmountPayable, 
    TRTD.TotalFare, 
    TRTD.DeskName, 
    TRID.InvoiceAmount, 
    TRID.InvoiceNumber, 
    TRID.CurrencyTypeCode, 
    TRID.AdcolAmount, 
    TRID.ChqNo, 
    TM.Description as Travel_Mode, 

    TRID.Statement, 

    TRD.Sector As Itineary, 
    TRD.ServiceClass As ClassOfTravel 

    from TravelRequest TR LEFT JOIN(SELECT mt.*  
    FROM TravelRequestDetails mt INNER JOIN 
(
    SELECT travelrequestId, MIN(DepartureDate) DepartureDate 
    FROM TravelRequestDetails 
    GROUP BY travelrequestId 
) t ON mt.travelrequestId = t.travelrequestId AND mt.DepartureDate = t.DepartureDate)TRD ON TRD.TravelRequestId =TR.Id 

    left join TravelRequestEmployeeProfile TREP 
    on TREP.TravelRequestId=TRD.TravelRequestId 
    left join TravelRequestProjectDetails TRPD 
    on TRPD.TravelRequestId=TRD.TravelRequestId 
    left join TravelMode TM 
    on TM.Code=TRPD.TravelModeCode 
    left join TravelRequestTicketDetails TRTD 
    on TRTD.TravelRequestId=TRD.TravelRequestId 
    left join TravelRequestInvoiceDetails TRID 
    on TRID.TravelRequestId=TRD.TravelRequestId 
    where TR.Status='CL' and TR.RequestType='BT' 
    and TR.UpdatedOn Between DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()-1), 0) + '18:01' 
      AND DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()), 0) + '18:00' 
) 

select Travel_RequestId, max ([Traveler Name]) as [Traveler Name], max (EmployeeNo) as EmployeeNo, max (RequestNO) as RequestNO, 
max (TravelType) as TravelType, max(SWONCode) as SWONCode /* and other columns */ 
from cte 

Answer 3

を使用することができます記録しなければならない場合、私はあなたがPartition Byとrow_number()

例の助けを借りてそれを行うことができると思います。

select row_number() over (partition by customerId order by orderId) as rowNum, customerId,Name,number over (partition by customerId order by orderId) from Orders where rowNum=1

参照Group by vs partition by 。

編集

クエリでこれらの行が重複していなかった

select ROW_NUMBER() over (partition by TR.RequestNOorder by TRD.DepartureDate) as rowNum, TR.RequestNOorder,min(TR.DepartureDate) over (partition by TR.RequestNOorder) as DepartureDate from TravelRequestDetails where rowNum=1