combiner deux requêtes SQL

Question

SELECT Student.S_ID, COUNT(*) AS **Final_Exam_Level** 
FROM Student, Exams, Exam_Allocation 
WHERE (Student.S_ID)=Exam_Allocation.S_ID 
    And ((Exams.Exam_ID)=Exam_Allocation.Exam_ID) 
    And (Exams.Date_Taken) <= #12/31/2010# 
GROUP BY Student.S_ID, Student.Course_Level 
ORDER BY Student.S_ID; 

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SELECT Student.S_ID AS S_ID, Student.First_Name AS First_Name, Student.Surname AS Surname, MAX(New_Models.Date_Issued) AS Last_Course_Date, MAX(New_Models.Issue) AS Last_Issue, MAX(New_Models.Model_ID) AS Last_Model_ID, Student.Course_Level AS No_Training_Courses 
FROM New_Models, New_Models_Allocation, Student 
WHERE New_Models.Model_ID=New_models_Allocation.Model_ID And Student.S_ID=New_Models_Allocation.S_ID 
GROUP BY Student.S_ID, Student.Course_Level, First_Name, Surname 
ORDER BY MAX(New_Models.Model_ID) DESC; 

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Comment puis-je ajouter Final_Exam_Level dans la deuxième requête?

Final_Exam_Level compte le nombre d'examens que chaque étudiant a fait. Exam_Allocation a deux clés étrangères, S_ID et Exam_ID

select Query_New_Models.*, Query_Exam.Final_Exam_Level 
FROM (SELECT Student.S_ID AS S_ID, Student.First_Name AS First_Name, Student.Surname AS Surname, MAX(New_Models.Date_Issued) AS Last_Course_Date, MAX(New_Models.Issue) AS Last_Issue, MAX(New_Models.Model_ID) AS Last_Model_ID, Student.Course_Level AS No_Training_Courses 
FROM New_Models, New_Models_Allocation, Student 
WHERE New_Models.Model_ID=New_models_Allocation.Model_ID And Student.S_ID=New_Models_Allocation.S_ID 
GROUP BY Student.S_ID, Student.Course_Level 
ORDER BY MAX(New_Models.Model_ID) DESC)    INNER JOIN   (SELECT  Student.S_ID, COUNT(*) AS Final_Exam_Level 
FROM Student, Exams, Exam_Allocation 
WHERE (Student.S_ID)=Exam_Allocation.S_ID 
And ((Exams.Exam_ID)=Exam_Allocation.Exam_ID) 
And (Exams.Date_Taken)<=#12/31/2010# 
GROUP BY Student.S_ID, Student.Course_Level 
ORDER BY Student.S_ID 
) ON Query_Exam.S_ID = Query_New_Models.S_ID ; 

Answer 1

Il suffit de tourner les deux en sous-requêtes d'une requête plus

select Second.*, First.Final_Exam_Level 
    from (Your Second Query Here) Second 
      inner join 
     (Your First Query Here) First on First.Technician_ID = Second.Technician_ID