1.
SELECT CODE
FROM CUST
WHERE ST IN ('AZ', 'CA')
2.
SELECT DATE, DEFECTS, QTY
FROM MANU
WHERE CODE NOT IN ('DD', 'GC')
3.
SELECT CODE, DEFECTS
FROM MANU
WHERE DEFECTS BETWEEN 12 AND 16
4.

5.
SELECT COUNT(*)
FROM MANU
6.

18.
SELECT DATE
FROM MANU, CUST
WHERE CUST.CODE = 'AA' AND MST = ST
ORDER BY DATE