SQL Server 2005 One query to calculate two tables

Question

I am starting to work in SQL Server

I have three tables in a hospital database

• Patientfiles
• Other services
• PatientDeposit

Two queries to display my result

• Request number one. Show 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
  

This is the true result.

    PatientFileID  | TotalOtherServices
        14                194.00

• Request number two. Show 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
  

This is the true result.

    PatientFileID | TotalPatientDeposit
        14               450.00

• My very tired mix two requests

  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
  

This is the wrong result.

    PatientFileID  | TotalOtherServices | TotalPatientDeposit
         14                  582.00         1350.00

Thanks for helping me in advance.

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

Answer 2

With a quick glance, it looks like the values ​​are 3 times larger than expected.
(194 * 3 = 582, 450 * 3 = 1350).

, INNER JOIN.

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

, , .