CREATE TABLE MAIN_TBL (
magazine VARCHAR2(10),
region VARCHAR2(5),
quantity int );
INSERT INTO MAIN_TBL VALUES ( ‘Playboy’, ’Nord’, 1 );
INSERT INTO MAIN_TBL VALUES ( ‘Playboy’, ’East’, 2 );
INSERT INTO MAIN_TBL VALUES ( ‘AutoWeek’, ‘Nord’, 3 );
INSERT INTO MAIN_TBL VALUES ( ‘AutoWeek’, ‘West’, 4 );
INSERT INTO MAIN_TBL VALUES ( ‘Wired’, ’Nord’, 5 );
INSERT INTO MAIN_TBL VALUES ( [...]