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Question about COUNT in sub-query

Posted on 2006-11-24
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Last Modified: 2008-01-09
Hello,

I have a number of Modules, each of which has a number of multiple choice questions.  

I need a query that will return A) The user's score, B)The Module name, C) The total number of questions in each Module.

The following query returns A & B successfully, but C returns the total number of questions of ALL Modules rather that in EACH Module.

SELECT sc.Score, sc.UserNameID, m.ModuleID, m.ModuleName, un.UserName,
      (SELECT COUNT(ModuleID) FROM Questions) AS QuestionCount
FROM ScoreByModule sc INNER JOIN Modules m
ON sc.ModuleID = m.ModuleID
INNER JOIN UserName un
ON sc.UserNameID = un.UserNameID
WHERE un.UserName ='JoeSmith'
GROUP BY m.ModuleName, sc.Score, sc.UserNameID, m.ModuleID, un.UserName

Thanks-

0
Comment
Question by:tmccrank
2 Comments
 
LVL 29

Accepted Solution

by:
Nightman earned 125 total points
ID: 18009152
Give this a shot:

SELECT
    sc.Score,
    sc.UserNameID,
    m.ModuleID,
    m.ModuleName,  
    un.UserName,
    COUNT(q.ModuleID) AS QuestionCount
FROM
    ScoreByModule sc
    INNER JOIN Modules m
        INNER JOIN Questions q ON q.ModuleID=m.ModuleID
    ON sc.ModuleID = m.ModuleID
    INNER JOIN UserName un ON sc.UserNameID = un.UserNameID
WHERE
    un.UserName ='JoeSmith'
GROUP BY
    m.ModuleName, sc.Score, sc.UserNameID, m.ModuleID, un.UserName
0
 

Author Comment

by:tmccrank
ID: 18009224
That did it, thanks.
0

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