ROW_NUMBER()与DISTINCT

Question

我有一个ROW_NUMBER()的问题,如果我在下面的查询中使用它与DISTINCT我有2个场景:1-直接运行此查询:给我示例400记录作为结果2-取消注释以[ - 开头的行-Uncomment1--]:给我700条记录,因为它复制了一些记录而不是所有记录

我想要的是解决这个问题或找到任何方法在每一行旁边显示一个行计数器,以使[在1到30之间的rownumber] - Uncomment2--

如果我把整个查询放在一个表中,然后过滤它,它是工作但它仍然很慢

等待任何反馈,我会很感激

提前致谢

SELECT * FROM 
(SELECT Distinct  CRSTask.ID AS TaskID,
      CRSTask.WFLTaskID,
  --Uncomment1--       ROW_NUMBER() OVER (ORDER By  CRSTask.CreateDate asc ) AS RowNum ,
      CRSTask.WFLStatus AS Task_WFLStatus,
      CRSTask.Name AS StepName,
      CRSTask.ModifiedDate AS Task_ModifyDate,
      CRSTask.SendingDate AS Task_SendingDate,
      CRSTask.ReceiveDate AS Task_ReceiveDate,
      CRSTask.CreateDate AS Task_CreateDate,
      CRS_Task_Recipient_Vw.Task_CurrentSenderName,
      CRS_Task_Recipient_Vw.Task_SenderName,
      CRS_INFO.ID AS CRS_ID,
      CRS_INFO.ReferenceNumber,
      CRS_INFO.CRSBeneficiaries,

      CRS_INFO.BarCodeNumber,
      ISNULL(dbo.CRS_FNC_GetTaskReceiver(CRSTask.ID), '') + ' ' + ISNULL 

(CRS_Organization.ArName, '') 
     AS OrgName,
      CRS_Info.IncidentID,
      COALESCE(CRS_Subject.ArSubject, '??? ????') AS ArSubject,
      COALESCE(CRS_INFO.Subject, 'Blank Subject') AS CRS_Subject,
      CRS_INFO.Mode,
      CRS_Task_Recipient_Vw.ReceiverID,
      CRS_Task_Recipient_Vw.ReceiverType,
      CRS_Task_Recipient_Vw.CC,
      Temp_Portal_Users_View.ID AS CRS_LockedByID,
      Temp_Portal_Users_View.ArabicName AS CRS_LockedByName,
      CRSDraft.ID AS DraftID,
      CRSDraft.Type AS DraftType,
      CASE 
     WHEN CRS_Folder = 1 THEN Task_SenderName
     WHEN CRS_Folder = 2 THEN Task_SenderName
     WHEN CRS_Folder = 3 THEN Task_CurrentSenderName
      END AS SenderName,
      CRS_Task_Folder_Vw.CRS_Folder,
      CRS_INFO.Status,
      CRS_INFO.CRS_Type,
      CRS_Type.arName AS CRS_Type_Name
  FROM   CRS_Task_Folder_Vw
      LEFT OUTER JOIN CRSTask
     ON  CRSTask.ID = CRS_Task_Folder_Vw.TaskID
      LEFT OUTER JOIN CRS_INFO
     ON  CRS_INFO.ID = CRSTask.CRSID
      LEFT OUTER JOIN CRS_Subject
     ON  COALESCE(
       SUBSTRING(
        CRS_INFO.Subject,
        CHARINDEX('_', CRS_INFO.Subject) + 1,
        LEN(CRS_INFO.Subject)
       ),
       'Blank Subject'
      ) = CRS_Subject.ID
      LEFT OUTER JOIN CRSInfoAttribute
     ON  CRS_INFO.ID = CRSInfoAttribute.ID
      LEFT OUTER JOIN CRS_Organization
     ON  CRS_Organization.ID = CRSInfoAttribute.SourceID
      LEFT OUTER JOIN CRS_Type
     ON  CRS_INFO.CRS_Type = CRS_Type.ID
      LEFT OUTER JOIN CRS_Way
     ON  CRS_INFO.CRS_Send_Way = CRS_Way.ID
      LEFT OUTER JOIN CRS_Priority
     ON  CRS_INFO.CRS_Priority_ID = CRS_Priority.ID
      LEFT OUTER JOIN CRS_SecurityLevel
     ON  CRS_INFO.SecurityLevelID = CRS_SecurityLevel.ID
      LEFT OUTER JOIN Portal_Users_View
     ON  Portal_Users_View.ID = CRS_INFO.CRS_Initiator
      LEFT OUTER JOIN AD_DOC_TBL
     ON  CRS_INFO.DocumentID = AD_DOC_TBL.ID
      LEFT OUTER JOIN CRSTask AS Temp_CRSTask
     ON  CRSTask.ParentTask = Temp_CRSTask.ID
      LEFT OUTER JOIN Portal_Users_View AS Temp_Portal_Users_View
     ON  Temp_Portal_Users_View.ID = AD_DOC_TBL.Lock_User_ID
      LEFT OUTER JOIN Portal_Users_View AS Temp1_Portal_Users_View
     ON  Temp1_Portal_Users_View.ID = CRS_INFO.ClosedBy
      LEFT OUTER JOIN CRSDraft
     ON  CRSTask.ID = CRSDraft.TaskID
      LEFT OUTER JOIN CRS_Task_Recipient_Vw
     ON  CRSTask.ID = CRS_Task_Recipient_Vw.TaskID 
      --LEFT OUTER JOIN  CRSTaskReceiverUsers     ON CRSTask.ID = 

CRSTaskReceiverUsers.CRSTaskID AND CRS_Task_Recipient_Vw.ReceiverID = CRSTaskReceiverUsers.ReceiverID

      LEFT OUTER JOIN CRSTaskReceiverUserProfile
     ON  CRSTask.ID = CRSTaskReceiverUserProfile.TaskID
  WHERE  Crs_Info.SUBJECT <> 'Blank Subject'
      AND (CRS_INFO.Subject NOT LIKE '%null%')
      AND CRS_Info.IsDeleted <> 1 
       /* AND CRSTask.WFLStatus <> 6 
       AND CRSTask.WFLStatus <> 8  */
      AND (
        (
         CRS_Task_Recipient_Vw.ReceiverID IN (1, 29)
         AND CRS_Task_Recipient_Vw.ReceiverType IN (1, 3, 4)
        )
       )
      AND 1 = 1

)Codes
--Uncomment2--  WHERE Codes.RowNum BETWEEN 1 AND 30
ORDER BY
       Codes.Task_CreateDate ASC

Answer 1

如果问题是您有重复的行并且DISTINCT失败,因为序数行号使每一行都是唯一的; 尝试(带DISTINCT):

DENSE_RANK() OVER (ORDER By CRSTask.CreateDate asc)

您还可以删除DISTINCT和GROUP BY一切都在CTE.