SQL帮助 - 返回来自加入的重复项

Question

我的SQL查询连接到多个表，因此它显示多个结果。我知道SELECT DISTINCT，但其中一个字段（'Account.Name'）偶尔会有所不同，因此它将此记录视为新行。有任何想法吗？这是我的SQL：

SELECT DISTINCT 
         d.ID, ISNULL(d.OnHold, 0) AS 'OnHold', d.OnHoldReason AS 'On Hold Reason', d.LegacyID AS 'Consignment#', d.IntConNo AS 'Consignment Ref', 
         CASE WHEN JobType = 'O' THEN 'Outward' ELSE 'Collection' END AS 'Job Type', d.TripDate AS 'Delivery Date', d.DeliveryTown AS 'Delivery Town', 
         d.DeliveryPostcode AS 'Delivery Postcode', d.VehicleReg AS 'Vehicle Reg', d.RequiredCollectionDate AS 'Req. Collection Date', 
         d.VehicleReg AS 'Vehicle Registration', CASE WHEN d .DeliveryStatus = 2 THEN 'OK' END AS 'Delivery Status', d.ItemsignedBy AS 'POD Signed By', 
         d.BaseRate AS 'Base Rate', d.FuelSurcharge AS 'Fuel Surcharge', d.AdditionalCharges AS 'Additional Charges', 
         d.BaseRate + d.FuelSurcharge + d.AdditionalCharges AS 'Value', CASE WHEN InvoiceNumber IS NULL THEN CONVERT(bit, 0) ELSE CONVERT(bit, 1) 
         END AS Tagged, CASE WHEN di.Total = di.Delivered THEN 'Recieved' ELSE 'Not Recieved' END AS 'Items', Account.Name 
FROM   Deliveries AS d LEFT OUTER JOIN 
          (SELECT  Consignment, COUNT(*) AS Total, COUNT(CASE WHEN Status = 2 THEN 1 END) AS Delivered 
          FROM   Items 
          GROUP BY Consignment) AS di ON d.ID = di.Consignment INNER JOIN 
         Account ON d.Customer = Account.InvoiceAccount 
WHERE  (d.InvoiceNumber IS NULL) AND (d.TripDate > 29/11/2010) 
ORDER BY 'Consignment#' 

Answer 1

最简单的解决方案是用GROUP BY替换DISTINCT。问题是只有一个帐户名称被返回。

其他的解决方案可能是

• 创建一个函数返回级联帐户名
• 使用子选择通过

  SELECT d.ID 
       , ISNULL(d.OnHold, 0) AS 'OnHold' 
       , d.OnHoldReason AS 'On Hold Reason' 
       , d.LegacyID AS 'Consignment#' 
       , d.IntConNo AS 'Consignment Ref' 
       , CASE WHEN JobType = 'O' THEN 'Outward' ELSE 'Collection' END AS 'Job Type' 
       , d.TripDate AS 'Delivery Date' 
       , d.DeliveryTown AS 'Delivery Town' 
       , d.DeliveryPostcode AS 'Delivery Postcode' 
       , d.VehicleReg AS 'Vehicle Reg' 
       , d.RequiredCollectionDate AS 'Req. Collection Date' 
       , d.VehicleReg AS 'Vehicle Registration' 
       , CASE WHEN d .DeliveryStatus = 2 THEN 'OK' END AS 'Delivery Status', d.ItemsignedBy AS 'POD Signed By' 
       , d.BaseRate AS 'Base Rate' 
       , d.FuelSurcharge AS 'Fuel Surcharge' 
       , d.AdditionalCharges AS 'Additional Charges' 
       , d.BaseRate + d.FuelSurcharge + d.AdditionalCharges AS 'Value' 
       , CASE WHEN InvoiceNumber IS NULL THEN CONVERT(bit, 0) ELSE CONVERT(bit, 1) END AS Tagged 
       , CASE WHEN di.Total = di.Delivered THEN 'Recieved' ELSE 'Not Recieved' END AS 'Items' 
       , MIN(Account.Name) 
  FROM Deliveries AS d 
       LEFT OUTER JOIN (
        SELECT Consignment 
          , COUNT(*) AS Total 
          , COUNT(CASE WHEN Status = 2 THEN 1 END) AS Delivered 
        FROM Items 
        GROUP BY 
          Consignment 
       ) AS di ON d.ID = di.Consignment 
       INNER JOIN Account ON d.Customer = Account.InvoiceAccount 
  WHERE (d.InvoiceNumber IS NULL) 
       AND (d.TripDate > 29/11/2010) 
  GROUP BY 
       d.ID 
       , ISNULL(d.OnHold, 0) 
       , d.OnHoldReason 
       , d.LegacyID 
       , d.IntConNo 
       , CASE WHEN JobType = 'O' THEN 'Outward' ELSE 'Collection' END 
       , d.TripDate 
       , d.DeliveryTown 
       , d.DeliveryPostcode 
       , d.VehicleReg 
       , d.RequiredCollectionDate 
       , d.VehicleReg 
       , CASE WHEN d .DeliveryStatus = 2 THEN 'OK' END AS 'Delivery Status', d.ItemsignedBy 
       , d.BaseRate 
       , d.FuelSurcharge 
       , d.AdditionalCharges 
       , d.BaseRate + d.FuelSurcharge + d.AdditionalCharges 
       , CASE WHEN InvoiceNumber IS NULL THEN CONVERT(bit, 0) ELSE CONVERT(bit, 1) END 
       , CASE WHEN di.Total = di.Delivered THEN 'Recieved' ELSE 'Not Recieved' END 
  ORDER BY 
       'Consignment#' 
  

  返回只有一个名字

使用组