Question

我创建了以下查询以检索我的各种Client和Matter信息律师事务所。 - 基本上我们需要看看谁在哪个问题上工作过客户（s）在过去三年。

除了物质创建日期，我们现在被要求撤回交易日期 - TT.TRAN_DATE - （收费时间），让我们看看谁工作了在最近具有更高准确度的事物上。问题在那里将是每个客户/事项/收费者的多个交易日期，我们只是确实需要查看最近的交易日期。

不幸的是，我很挣扎，时间很短。有人能告诉我如何修改上面的查询，以便只返回每个的最大交易日期客户/事项/收费者？日期也应与格式相同现有的“事项创建日期”字段。

提前致谢，加文

SELECT DISTINCT HC.CLIENT_NAME AS [Client Name],
  HC.CLIENT_CODE AS [Client Code],
  HM.MATTER_CODE AS [Matter Code], 
  HM.CLNT_MATT_CODE AS [Client Matter Code],
  convert(varchar,HM.OPEN_DATE,103) AS [Matter Creation Date],
  HP.EMPLOYEE_CODE AS [Fee Earner Code],
  HP.EMPLOYEE_NAME AS [Fee Earner Name],
  TT.TRAN_DATE AS [Transaction Date]
  FROM        HBM_MATTER HM  
  LEFT OUTER JOIN TAT_TIME TT 
        ON    HM.MATTER_UNO=TT.MATTER_UNO
  LEFT JOIN   HBM_CLIENT HC 
        ON    HM.CLIENT_UNO=HC.CLIENT_UNO 
  LEFT JOIN   HBM_PERSNL HP 
        ON    TT.TK_EMPL_UNO=HP.EMPL_UNO 
  WHERE             HM.INACTIVE='n' 
  AND         HM.STATUS_CODE <> 'CLOSE'
  AND         HP.INACTIVE = 'N'
  AND         TT.TRAN_DATE > dateadd(month,-36,getdate()) 
  ORDER BY    HC.CLIENT_CODE,   HM.MATTER_CODE

Answer 1

假设您没有指定SQL Server，这是我的解决方案。我无法检查它，但我认为应该没问题：

    WITH cte AS (SELECT DISTINCT 
      HC.CLIENT_NAME AS [Client Name]
      ,HC.CLIENT_CODE AS [Client Code]
      ,HM.MATTER_CODE AS [Matter Code]
      ,HM.CLNT_MATT_CODE AS [Client Matter Code]
      ,CONVERT(VARCHAR,HM.OPEN_DATE,103) AS [Matter Creation Date]
      ,HP.EMPLOYEE_CODE AS [Fee Earner Code]
      ,HP.EMPLOYEE_NAME AS [Fee Earner Name]
      ,TT.TRAN_DATE AS [Transaction Date]
      ,ROW_NUMBER() OVER(PARTITION BY HC.CLIENT_CODE, HM.MATTER_CODE, HP.EMPLOYEE_CODE 
                          ORDER BY TT.TRAN_DATE DESC) AS trans_order 
    FROM HBM_MATTER HM  
      LEFT OUTER JOIN TAT_TIME TT ON HM.MATTER_UNO=TT.MATTER_UNO
      LEFT OUTER JOIN HBM_CLIENT HC ON HM.CLIENT_UNO=HC.CLIENT_UNO 
      LEFT OUTER JOIN HBM_PERSNL HP ON TT.TK_EMPL_UNO=HP.EMPL_UNO 
    WHERE HM.INACTIVE = 'n' 
      AND HM.STATUS_CODE <> 'CLOSE'
      AND HP.INACTIVE = 'N'
      AND TT.TRAN_DATE > DATEADD(MONTH, -36, GETDATE()) 
   )
    SELECT * FROM cte 
    WHERE trans_order = 1
     ORDER BY 
      CLIENT_CODE
      ,MATTER_CODE

选择最大值

1 个答案: