Question

SELECT 
    COUNT(X.ACTIVITY_ID) 
FROM 
    (SELECT  
         ACTIVITY_ID 
     FROM 
         mi_s_data.dbo.[MI_FACT_ACTIVITY] 
     WHERE  
         Date_Key BETWEEN (convert(int, convert(varchar(10), DatePart(yyyy,GetDate()), 112)) - 2)*10000 + 101 
                      AND convert(int, convert(varchar(10), GetDate(), 112))
     UNION
     SELECT  
         ACTIVITY_ID  
     FROM 
         [MI_S_DATA].[DBO].[MOS_FACT_ACTIVITY_V1] MFA
     WHERE 
         Date_Key BETWEEN (convert(int, convert(varchar(10), DatePart(yyyy,GetDate()), 112)) - 2)*10000 + 101 
                      AND convert(int, convert(varchar(10), GetDate(), 112))
      AND MFA.ACTIVITY_UID IS NULL) X  --Count is 1763046

在运行个人计数时如下：

select count(*) 
from 
    (SELECT ACTIVITY_ID 
     FROM mi_s_data.dbo.[MI_FACT_ACTIVITY] 
     WHERE Date_Key BETWEEN (convert(int, convert(varchar(10), DatePart(yyyy,GetDate()), 112)) - 2)*10000 + 101 
                        AND convert(int, convert(varchar(10), GetDate(), 112))) a   --5774079

 select count(*) 
 from 
     (SELECT ACTIVITY_ID  
      FROM [MI_S_DATA].[DBO].[MOS_FACT_ACTIVITY_V1] MFA
      WHERE Date_Key BETWEEN (convert(int, convert(varchar(10), DatePart(yyyy,GetDate()), 112)) - 2)*10000 + 101 AND convert(int, convert(varchar(10), GetDate(), 112)) 
        AND MFA.ACTIVITY_UID IS NULL) a--0

Answer 1

SELECT 
    COUNT(X.ACTIVITY_ID) 
FROM 
    (SELECT  
         ACTIVITY_ID 
     FROM 
         mi_s_data.dbo.[MI_FACT_ACTIVITY] 
     WHERE  
         Date_Key BETWEEN (convert(int, convert(varchar(10), DatePart(yyyy,GetDate()), 112)) - 2)*10000 + 101 
                      AND convert(int, convert(varchar(10), GetDate(), 112))
     UNION ALL
     SELECT  
         ACTIVITY_ID  
     FROM 
         [MI_S_DATA].[DBO].[MOS_FACT_ACTIVITY_V1] MFA
     WHERE 
         Date_Key BETWEEN (convert(int, convert(varchar(10), DatePart(yyyy,GetDate()), 112)) - 2)*10000 + 101 
                      AND convert(int, convert(varchar(10), GetDate(), 112))
      AND MFA.ACTIVITY_UID IS NULL) X  --Count is 1763046

外部查询计数错误

1 个答案: