SELECT Name, Continent, Population
FROM country
WHERE Population < 100000
OR Population IS NULL
ORDER BY Population DESC;
SELECT Name, Continent, Population
FROM country
WHERE Population < 100000
AND Continent = "Oceania"
ORDER BY Population DESC;
SELECT Name, Continent, Population
FROM country
WHERE Name LIKE "%island%"
AND Population NOT NULL
ORDER BY Name;
SELECT Name, Continent, Population
FROM country
WHERE Name LIKE "_a%" # second character is "a"
AND Population NOT NULL
ORDER BY Name
SELECT Name, Continent, Population
FROM country
WHERE Continent IN ('Asia', 'Europe')
AND Population NOT NULL
ORDER BY Name