You can do this using a hierarchical query.  An example of this in SQL Server would be to use Common Table Expressions (CTE).
You would first need to add two site parameters to your site admin - site configuration tab.
In order to create Excel Reports you would need:
        Param: ENABLE_CREATE_LEGACY_EXCEL_REPORT
        Value: Y
Then to use the Common Table Expressions (CTE) SQL statements:
     Param: SQL_QUERY_VALIDATION_ENABLED
        Value:  N
Now we can use the Common Table Expressions query along with the ''STUFF'' function and a little manipulation of the ''FOR XML'' clause to build the path.
    WITH w1 ( FolderID, FatherID, FolderName, level ) AS
        	     (SELECT AL_ITEM_ID, AL_FATHER_ID, AL_DESCRIPTION, 0 AS level
        	     FROM ALL_LISTS, TEST
    	         WHERE TEST.TS_SUBJECT = ALL_LISTS.AL_ITEM_ID AND
                       TEST.TS_TEST_ID = '67' 
    	UNION ALL
    	         SELECT AL_ITEM_ID, AL_FATHER_ID, AL_DESCRIPTION, level + 1
    	         FROM ALL_LISTS
    	         JOIN w1 ON w1.FatherID = ALL_LISTS.AL_ITEM_ID)
    	SELECT TS_TEST_ID As ''TestID'',
		      TS_NAME As ''Test Name'',
              (SELECT STUFF((SELECT '/' + FolderName
              FROM w1
              ORDER BY level DESC
              FOR XML PATH ('')) , 1, 1, '')) As ''Test Path''
        FROM TEST
        WHERE TS_TEST_ID = '67'
Then your result should look like this:
![alt text][1]
  [1]: /storage/temp/489-capture.jpg