How to get Sub folder or Test Set table name in QC 10.0

I am trying to create a drop down of Domain , Project, Folder and Sub Folders, but not able to find Sub folder table name

SELECT
    'DATETIME' +  '!' + CONVERT(VARCHAR(20), DATEADD(hh,1,GETDATE()), 100) AS DataSourceDetail
UNION ALL
SELECT
    'DOMAIN_NAME' +  '!' + DOMAIN_NAME AS DataSourceDetail
FROM
    qcsiteadmin10_db..PROJECTS
WHERE
    DB_NAME = DB_NAME()
UNION ALL
SELECT
    'PROJECT_NAME' +  '!' + PROJECT_NAME AS DataSourceDetail
FROM
    qcsiteadmin10_db..PROJECTS
WHERE
    DB_NAME = DB_NAME()