Question

I am havin a query as

SELECT * FROM Issue I, Condition C, Result R, Status S      
            LEFT JOIN Issue as i1 ON C.ID = i1.ConditionID
            LEFT JOIN Issue as i2 ON R.ID = i2.ResultID
            LEFT JOIN Issue as i3 ON S.ID = i3.StatusID 
            WHERE I.ID = 452

which is giving me the error message:

The multi-part identifier “C.ID” could not be bound.
The multi-part identifier “R.ID” could not be bound.

I want to have a result as follows:

ID| IssueName| ConditionID| ResultID| StatusID| ID| ConditionName| ID| ResultName| ID| StatusName

Answer 1

First, there’s no JOIN between relation `I’ and any other in your posted query, so you’ll end up with a cartesian join here.

Using the old-fashioned joining the query might look like this:

SELECT *
  FROM Issue I, Condition C, Result R, Status S
 WHERE I.ConditionID = C.ID
   AND I.ResultID = R.ID
   AND I.StatusID = S.ID
   -- the filter comes here
  AND I.ID = 42;

Using ANSI join syntax:

SELECT *
  FROM Issue I
    LEFT JOIN Condition C ON C.ID = I.ConditionID
    LEFT JOIN Result R ON R.ID = I.ResultID
    LEFT JOIN Status S ON S.ID = I.StatusID
 -- the filter comes here
 WHERE I.ID = 42;