1)SELECT Name, Salary+Commission, Salary/(Salary + Commission) AS "Результат1", Commission/(Salary + Commission) AS "Результат2"
FROM TEACHER
4) SELECT t.Name
FROM TEACHER t, FACULTY f, DEPARTMENT d
WHERE f.FacPK = d.FacFK AND d.DepPK = t.DepFK AND d.Name = 'Компютерні науки' AND t.Salary+t.Commission BETWEEN 1000 AND 1500
5) SELECT d.Name
FROM FACULTY f, DEPARTMENT d, SGROUP s
WHERE f.FacPK = d.FacFK AND d.DepPK = s.DepFK AND f.Name = 'Нафтогазової інженерії та комп`ютерних наук' AND s.Rating IN (12, 17, 25, 29, 33, 43, 50)
7) SELECT t.Name, t.Post
FROM FACULTY f, ROOM r, DEPARTMENT d, LECTURE l, TEACHER t
WHERE f.FacPK = d.FacFK AND d.DepPK = t.DepFK AND t.TchPK = l.TchFK AND r.RomPK = l.RomFK AND NOT t.Post = 'ассистент' AND r.Building = 4 OR r.Building = 6 AND t.Post = 'доцент'