тест 4 / SQL1

1

SELECT DISTINCT city FROM s UNION SELECT DISTINCT city FROM p ORDER BY 1

2

SELECT sNo, sName FROM s WHERE city IN ('Athens', 'Berlin', 'London') ORDER BY sName

3

SELECT DISTINCT city FROM s UNION ALL SELECT DISTINCT city FROM p ORDER BY 1

4

SELECT sNo, sName FROM s WHERE city NOT IN (SELECT city FROM p)

5

SELECT sNo, sName FROM s WHERE NOT EXISTS (SELECT * FROM sp WHERE sp.sNo = s.sNo) ORDER BY sNo

6

SELECT DISTINCT city, 's' AS ind FROM s UNION SELECT DISTINCT city, 'p' AS ind FROM p ORDER BY 1, 2

7

SELECT sNo, sName FROM s WHERE EXISTS (SELECT * FROM sp WHERE sp.sNo = s.sNo) ORDER BY sNo

8

SELECT sNo, sName FROM s WHERE city IN (SELECT city FROM p) ORDER BY sNo

9

SELECT sNo, sName, qty FROM s NATURAL JOIN sp WHERE s.sNo = ‘s5’ ORDER BY sNo

10

SELECT sNo AS no, sName AS name FROM s WHERE status = 20 UNION SELECT pNo AS no, pName AS name FROM p WHERE color = 'Green' ORDER BY 1