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Question

, 나는 내 결과의 열을 합계를 SQL Server의 결과의 열을 합계를,이 내 코드 :

SELECT 
    [study_service] 
    ,DATEDIFF(minute,[study_date_arrivee],[study_date_patient_prepared]) as [Time-ARRIVED-PREPARED] 
    ,DATEDIFF(minute,[study_date_arrivee],[study_date_start]) as [Time-ARRIVED-START] 
    ,DATEDIFF(minute,[study_date_start],[study_date_dossier_pret]) as [Time-START-DOSSPRET] 
    ,DATEDIFF(minute,[study_date_dossier_pret],[study_date_remise_resultat]) as [Time-DOSSPRET-DOSSREMIS] 
FROM 
    [VisionTST].[dbo].[PremierTrimestre] 

내가 최종 결과 다음과 같이합니다 :

Total of `[Time-ARRIVED-PREPARED]`,`[Time-ARRIVED-Start]`,... 

Answer 1

SELECT 
    [study_service] 
    ,sum(DATEDIFF(minute,[study_date_arrivee],[study_date_patient_prepared])) as [Time-ARRIVED-PREPARED] 
    ,sum(DATEDIFF(minute,[study_date_arrivee],[study_date_start])) as [Time-ARRIVED-START] 
    ,sum(DATEDIFF(minute,[study_date_start],[study_date_dossier_pret])) as [Time-START-DOSSPRET] 
    ,sum(DATEDIFF(minute,[study_date_dossier_pret],[study_date_remise_resultat])) as [Time-DOSSPRET- DOSSREMIS] 

FROM [VisionTST].[dbo].[PremierTrimestre]