Summarizing results
After ranking each country in the 2000 Olympics by gold medals awarded, you want to return the top 3 countries in one row, as a comma-separated string. In other words, turn this:
| Country | Rank |
|---------|------|
| USA | 1 |
| RUS | 2 |
| AUS | 3 |
| ... | ... |
into this:
USA, RUS, AUS
Deze oefening maakt deel uit van de cursus
PostgreSQL Summary Stats and Window Functions
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
WITH Country_Medals AS (
SELECT
Country,
COUNT(*) AS Medals
FROM Summer_Medals
WHERE Year = 2000
AND Medal = 'Gold'
GROUP BY Country)
SELECT
Country,
-- Rank countries by the medals awarded
___ AS Rank
FROM Country_Medals
ORDER BY Rank ASC;