--1.1 How many reports the user with username “UNIBOX” can access?

SELECT COUNT(1)
FROM
(SELECT DISTINCT m.module_id
FROM module m, module_category mc, gu_module gm, gui_users gu
WHERE gu.gui_user_id=gm.gui_user_id
AND gm.module_id=m.module_id
AND m.module_category_id=mc.module_category_id
AND gu.gui_user_id=101054);