求和從SQL視圖所得的值作爲總

Question

我有三個表這樣的 - 醫院，Diagnosstic和Farmacy。

醫院

HospitalID int 
PatientID int 
Due   float 

Diagnosstic

DaignosticID int 
PatientID int 
Due   float 

Farmacy

FarmacyID int 
PatientID int 
Due   float 

的patientID柱是峯從病人表

PatientId int 
Patient name var 

我有查詢，以顯示所有來自不同表的患者的會費和它們求和爲總。

我成功檢索了患者的所有會費，但我如何計算它們？

我的查詢是：

declare @patient int set @patient=1 
BEGIN 
    SELECT 
    dbo.Master.Name, 
    dbo.Diagonistic.Due AS DaigiDue, 
    dbo.Farmacy.Due AS FramaDue,    
    dbo.Hospital.Due AS HospiDue 
FROM dbo.Diagonistic 
FULL OUTER JOIN dbo.Master ON dbo.Diagonistic.PatientId = dbo.Master.PatientId 
FULL OUTER JOIN dbo.Farmacy ON dbo.Master.PatientId = dbo.Farmacy.PatientId 
FULL OUTER JOIN dbo.Hospital ON dbo.Master.PatientId = dbo.Hospital.PatientId 
where 
    dbo.Master.PatientId= @Patient 
end 

Answer 1

嘗試用這種...

Declare @Patient Int 
Set @Patient=1 
Begin 

    Select 
    dbo.Master.Name, 
    dbo.Diagonistic.Due AS DaigiDue, 
    dbo.Farmacy.Due AS FramaDue,    
    dbo.Hospital.Due AS HospiDue, 
    Isnull(dbo.Diagonistic.Due,'0') + Isnull(dbo.Farmacy.Due,'0') + Isnull(dbo.Hospital.Due,'0') as TotalDue  
    From dbo.Diagonistic 
    Full Outer Join dbo.Master ON dbo.Diagonistic.PatientId = dbo.Master.PatientId 
    Full Outer Join dbo.Farmacy ON dbo.Master.PatientId = dbo.Farmacy.PatientId 
    Full Outer Join dbo.Hospital ON dbo.Master.PatientId = dbo.Hospital.PatientId 
    Where 
     dbo.Master.PatientId= @Patient 

End