SQL Server 2005 一查询计算二表

Question

我是 SQL Server 的初学者

我在数据库医院有三张 table

患者文件

其他服务

患者存款

显示我的结果的两个查询

查询一号。显示 PatientFilesID、TotalOtherServices

SELECT pf.ID AS PatientFileID, SUM(os.Quantum * os.Price) AS TotalOtherServices
FROM PatientsFiles pf INNER JOIN OtherServices os ON pf.ID = os.Patient_File_ID 
WHERE pf.ID = '14'
GROUP BY pf.ID

这是真实的结果

    PatientFileID  | TotalOtherServices
        14                194.00

查询二号。显示 PatientFilesID、TotalPatientDeposit

SELECT pd.Patient_File_ID AS PatientFileID, SUM(pd.Deposit) AS TotalPatientDeposit
FROM PatientsDeposits pd
WHERE pd.Patient_File_ID = '14'
GROUP BY pd.Patient_File_ID

这是真实的结果

    PatientFileID | TotalPatientDeposit
        14               450.00

我很累混合两个查询

SELECT pf.ID AS PatientFileID, SUM(os.Quantum * os.Price) AS TotalOtherServices, 
SUM(pd.Deposit) AS TotalPatientDeposit
FROM PatientsFiles pf
INNER JOIN OtherServices os ON pf.ID = os.Patient_File_ID  
INNER JOIN PatientsDeposits pd ON pf.ID = pd.Patient_File_ID
WHERE pf.ID = '14'
GROUP BY pf.ID

这是错误的结果

    PatientFileID  | TotalOtherServices | TotalPatientDeposit
         14                  582.00         1350.00

谢谢你提前帮助我

Answer 1

Select pf.ID as PatientFileID,
    os.TotalOtherServices,
    pd.TotalDeposit
From PatientFiles pf
    Left Join
 (Select Patient_File_ID as PatientfileID, SUM(os.Quantum * os.Price) AS TotalOtherServices
  From OtherServices Group By Patient_File_ID) os on pf.PatientFileID = os.PatientFileID
    Left Join
 (Select Patient_File_ID AS PatientFileID, SUM(Deposit) AS TotalPatientDeposit
  From PatientsDeposits Group By Patient_File_ID) pd on pf.PatientFileID = pd.PatientFileID