Minimum country medals by year
So far, you've seen MAX and SUM, aggregate functions normally used with GROUP BY, being used as window functions. You can also use the other aggregate functions, like MIN, as window functions.
Latihan ini adalah bagian dari kursus
PostgreSQL Summary Stats and Window Functions
Petunjuk latihan
- Return the year, medals earned, and minimum medals earned so far.
Latihan interaktif praktis
Cobalah latihan ini dengan menyelesaikan kode contoh berikut.
WITH France_Medals AS (
SELECT
Year, COUNT(*) AS Medals
FROM Summer_Medals
WHERE
Country = 'FRA'
AND Medal = 'Gold' AND Year >= 2000
GROUP BY Year)
SELECT
___,
___,
___ OVER (ORDER BY ___ ASC) AS Min_Medals
FROM France_Medals
ORDER BY Year ASC;