Deaktiver alle lande
UPDATE country SET status = '0' WHERE status = '1';
UPDATE country SET status = '1' WHERE name = 'Canada';
UPDATE country SET status = '1' WHERE name = 'United States';
UPDATE country SET status = '0' WHERE status = '1';
UPDATE country SET status = '1' WHERE name = 'Canada';
UPDATE country SET status = '1' WHERE name = 'United States';