MySQL从另一个表联接的表中选择所有剩余的条目

Question

I have the following MySQL-Statement:

SELECT      norm.NormID, norm.NormName
FROM        (assignment
INNER JOIN  norm
ON          assignment.NID = norm.NormID )
INNER JOIN  wire
ON          assignment.LID = wire.WireID
WHERE       wire.WireID= 109 
ORDER BY    norm.NormName;  

Now what I got are the entries from the table assignment with the NormID and NormName for that WireID. What I want to get are the entries from the table norm, which are not setted for this WireID.

Eg: WireID has the norm assignment A, B, D, G.

The table norm has the entries A, B, C, D, E, F, G, H.

What I want to get from the MySQL-Statment are the entries C, E, F, H.

How can I select those left norm entries for this WireID?

With the above statement I would get:

---

-----------------------
| NormID  | NormName  |
-----------------------
| 1       |  A        |
| 2       |  B        |
| 4       |  D        |
| 7       |  G        |
-----------------------

I want to have this Table:

-----------------------
| NormID  | NormName  |
-----------------------
| 3       |  C        |
| 5       |  E        |
| 6       |  F        |
| 8       |  H        |
-----------------------

Answer 1

I think (if I understood what you asked) you can try this :

SELECT      norm.NormID, norm.NormName
FROM        assignment
INNER JOIN  norm ON assignment.NID = norm.NormID
LEFT JOIN   wire ON assignment.LID = wire.WireID
WHERE       assignment.LID= 109 
        AND wire.wireID IS NULL
ORDER BY    norm.NormName;  

Edit after your comments. I think you could use:

SELECT      A.NormID, A.NormName
FROM        norm A
LEFT JOIN   (SELECT NID FROM assignment WHERE LID = 109) B ON B.NID = A.NormID
WHERE       B.NID IS NULL     
ORDER BY    A.NormName;  

OR

SELECT      A.NormID, A.NormName
FROM        norm A
WHERE NOT EXISTS (SELECT 1 FROM assignment WHERE LID = 109 AND ASSIGNMENT.NID = A.NormID)
ORDER BY    A.NormName;

Answer 2

after you added a sample data the entries that are not setted with 109 wireid are these:

SELECT      norm.NormID, norm.NormName
FROM        assignment
inner JOIN  norm
ON          assignment.NID = norm.NormID 
INNER JOIN  wire
ON          assignment.LID = wire.WireID
WHERE       wire.WireID <> 109 
ORDER BY    norm.NormName;  

Answer 3

Try this:

select  norm.NormID,norm.NormName from norm
Inner JOIN
assignment on assignment.NID = norm.NormID
where assignment.LID in(select wireID from Wire where WireID = 109)

Im not so sure coz i dont have your data