delete from Stadien;
insert into Stadien values('Berlin',72000  );
insert into Stadien values('Dortmund',65000  );
insert into Stadien values('Frankfurt',48000 );
insert into Stadien values('Gelsenkirchen',52000 );
insert into Stadien values('Hamburg',50000 );
insert into Stadien values('Hanover',43000 );
insert into Stadien values('Kaiserslautern',46000  );
insert into Stadien values('Cologne',45000 );
insert into Stadien values('Leipzig',43000 );
insert into Stadien values('Munich',66000  );
insert into Stadien values('Nuremberg',41000 );
insert into Stadien values('Stuttgart',52000 );