SQL Server的 - 如何刪除重複的第二列

Question

我有類似於以下的查詢，並希望刪除第二/第三列中的重複行...需要示例，我可以使用以下（頂部1，最大，min等等）或其他最好的方法，而不使用派生查詢來刪除重複值。感謝JK

WITH cteEMPAssistants (executive_personnel_number, assistant_personnel_number, assistant_type, SecType) AS 
    (SELECT DISTINCT CASE 
         WHEN ISNUMERIC(KA.KIT_asgn_emplid) = 1 THEN CAST(CAST(KA.KIT_asgn_emplid AS INT) AS VARCHAR(11)) 
         ELSE '' 
        END AS executive_personnel_number , 
        CAST(CAST(KAP.emplid AS INT) AS VARCHAR(11)) AS assistant_personnel_number , 
        ISNULL(LATT1.xlatlongname, '') AS assistant_type , 
        CAST(LATT1.fieldvalue AS VARCHAR(4)) AS SecType , 
        ISNULL(LATT3.xlatshortname, '') AS assign_role 
    FROM dbo.KIT_ASGN_PRNT AS KAP 
    LEFT OUTER JOIN dbo.KIT_ASSIGNMENTS AS KA ON KA.emplid = KAP.emplid 
    AND KA.effdt = KAP.effdt 
    LEFT OUTER JOIN dbo.KIT_EMPLOYEES AS EXECT ON EXECT.EMPLID = KA.KIT_ASGN_EMPLID 
    LEFT OUTER JOIN dbo.KIT_EMPLOYEES AS ASST ON ASST.EMPLID = KAP.EMPLID 
    LEFT OUTER JOIN dbo.XLATITEM AS LATT1 ON LATT1.fieldname = 'KIT_ASGN_TYPE' 
    AND LATT1.fieldvalue = KAP.KIT_asgn_type 
    LEFT OUTER JOIN dbo.XLATITEM AS LATT3 ON LATT3.fieldname = 'KIT_ASGN_ROLE' 
    AND LATT3.fieldvalue = KA.KIT_asgn_role 
    AND LATT3.xlatshortname = 'Primary' 
    WHERE KAP.effdt = 
     (SELECT MAX(effdt) 
     FROM dbo.KIT_ASGN_PRNT 
     WHERE emplid = KAP.emplid 
      AND effdt <= GETDATE()) --Return data only when employee and assistant active; null is for temps 

    AND (EXECT.EMP_STATUS = 'A' 
      OR EXECT.EMP_STATUS IS NULL) 
    AND ASST.EMP_STATUS = 'A' --Return all floating secretaries 

    AND (KAP.KIT_asgn_type = 'F' --Return all assigned secretaries, who are assigned to a person and not a task 

      OR (KAP.KIT_asgn_type IN ('A', 
            'AF') 
       AND KA.KIT_asgn_person = 'Y'))) 
SELECT CAST(EMP.KIT_EMPLID AS VARCHAR(15)) AS employeeNumber , 
     KAP.emplid AS Assistant , 
     SECRES.SecType AS SecType 
FROM dbo.KIT_EMPLOYEES AS EMP 
LEFT OUTER JOIN cteEMPAssistants AS SECRES ON EMP.KIT_EMPLID = SECRES.assistant_personnel_number 
WHERE (EMP.EMP_STATUS = 'A') 
    AND (EMP.PER_ORG IN ('EMP', 
         'CWR')) 
    AND (ISNULL(EMP.KIT_NETWORK_ID, '') <> '') 

下面是示例輸出：

employeeNumber Assistant  SecType 
--------------- ---------  ----------------- 
1234    1112   A 
1234    1112   A 
1234    1112   A 
1234    1112   A 
4567    1113   NULL 
1278    1114   NULL 
1365    1115   NULL 
1298    1116   A 
1476    1117   A 
1191    1118   NULL 

Answer 1

您應該能夠附加給你的查詢的結尾：

GROUP BY EMP.KIT_EMPLID, KAP.emplid, SECRES.SecType