取END_DATE

的最低起始日期和最大

我使用下面的查詢：取END_DATE

select * from (Select 


         [CLIENT_ID], 
         [CLIENT_NAME], 
         [SUPER_GROUP_ID], 
         [SUPER_GROUP], 
         [MASTER_GROUP_ID], 
         [MASTER_GROUP], 
         [SALES_GROUP_ID], 
         [SALES_GROUP], 
         [VOTING_ENTITY_ID], 
         [VOTING_ENTITY], 
         [COVERAGE_SPECIALITY], 
         [COVERAGE_FUND], 
         [MCM_CLASSIFICATION], 
         [START_DATE], 
         IsNull([END_DATE], GetDate()) as END_DATE, 
         ROW_NUMBER()OVER (partition by CLIENT_ID order by START_DATE desc, END_DATE ) as RNUM 
       FROM [mi_s_data].[dbo].[BI_CLIENT_CONTACT_MAPPING] 

       ) CCMAP2 
       where CCMAP2.RNUM =1 and ccmap2.CLIENT_ID= '1-12W68I'

我想爲記錄這START_DATE是最小和END_DATE分配RNUM是最大

來源

2017-03-02 Ankur Jain

你嘗試過這麼遠嗎？請提供預期產出。 –

請給予預期的輸出不僅你的腳本。 –

只是更改順序， START_DATE和END_DATE，希望這有助於

ROW_NUMBER()OVER (partition by CLIENT_ID order by START_DATE, END_DATE desc) as RNUM

來源

2017-03-02 07:15:10

SELECT        
          [CLIENT_ID], 
          MIN([START_DATE]) as START_DATE, 
          Max(IsNull([END_DATE], GetDate())) as END_DATE      
         FROM [mi_s_data].[dbo].[BI_CLIENT_CONTACT_MAPPING]    

    GROUP BY 
           [CLIENT_ID]

來源

2017-03-02 10:17:14

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