CREATE TABLE city (city VARCHAR, regional_population INT)

Please give me a list of cities whose regional population is over 8000000 or under 5000000.
SELECT city FROM city WHERE regional_population > 10000000 UNION SELECT city FROM city WHERE regional_population < 5000000
SELECT "city" FROM "city" WHERE "regional_population" > 10000000 UNION SELECT "city" FROM "city" WHERE "regional_population" < 5000000