Question

DB Table Structure:

Session Table (aka Exam Table)

SessionId(auto)  SessionName
137              XULWQ

Question Table:

SessionId  QuestionId QuestionContent  QuestionNo QuestionMarks  OptionId
137        1          Name 2 Things     1         5               5
137        2          Name 3 Things     2         5               2

Option_Table Table:

OptionId  OptionType
1         A-C
2         A-D
3         A-E
4         A-F
5         A-G
6         A-H

Answer Table:

 AnswerId(auto) SessionId  QuestionId  Answer
   200            137        1           B
   201            137        1           F
   202            137        2           D
   203            137        2           A
   204            137        2           C   

I am having trouble compiling the query below. I want to select the following fields undeneath in the query but the problem I am having is with my joins. If you look at the last join I am trying to retrieve OptionID from Option_Table Table but I have to go through the Answer table which doesn’t have that field. My problem is that I have 3 fields which actually rely on joining with the Question` Table.

My question is what is the correct way of joining the tables below so that it displays the answers for each question with the fields I want to SELECT?

SELECT q.SessionId, s.SessionName, q.QuestionId, q.QuestionNo, q.QuestionContent, an.Answer, an.AnswerId, q.QuestionMarks, q.OptionId, o.OptionType
       FROM Session s 
       INNER JOIN Question q ON s.SessionId = q.SessionId
       JOIN Answer an ON q.QuestionId = an.QuestionId
       JOIN Option_Table o ON an.OptionId = o.OptionId
       WHERE s.SessionName = ?
       ORDER BY q.QuestionId, an.Answer

Output required:

Answer 1

SELECT * 
FROM Question q 
    INNER JOIN Answer a ON q.QuestionID = a.QuestionID
    INNER JOIN Option_Table ot ON ot.optionID = q.optionID
    INNER JOIN session s ON s.sessionid = q.sessionid