I'm using the MySQL WORLD database.
For each Continent, I want to return the Name of the country with the largest population.
I was able to come up with a query that works. Trying to find another query that uses join only and avoid the subquery.
Is there a way to write this query using JOIN?
SELECT Continent, Name
FROM Country c1
WHERE Population >= ALL (SELECT Population FROM Country c2 WHERE c1.continent = c2.continent);
+---------------+----------------------------------------------+
| Continent | Nanme |
+---------------+----------------------------------------------+
| Oceania | Australia |
| South America | Brazil |
| Asia | China |
| Africa | Nigeria |
| Europe | Russian Federation |
| North America | United States |
| Antarctica | Antarctica |
| Antarctica | Bouvet Island |
| Antarctica | South Georgia and the South Sandwich Islands |
| Antarctica | Heard Island and McDonald Islands |
| Antarctica | French Southern territories |
+---------------+----------------------------------------------+
11 rows in set (0.14 sec)