240927 Project EDA SQL

SQL queries.sql

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+-- What is the most popular song of each year?
+SELECT track, popularity, year
+FROM tracks
+INNER JOIN albums
+	ON tracks.album_id = albums.album_id
+WHERE popularity = (
+	SELECT MAX(popularity)
+    FROM tracks AS sub_tracks
+    INNER JOIN albums AS sub_albums
+		ON sub_tracks.album_id = sub_albums.album_id
+	WHERE sub_albums.year = albums.year)
+ORDER BY year
+;
+
+-- What's the most popular album? (Sum of the popularity of each album track divided by the number of tracks in the album)
+SELECT albums.album, artist, (SUM(popularity) / COUNT(track_id)) album_popularity
+FROM albums
+INNER JOIN tracks
+	ON albums.album_id = tracks.album_id
+INNER JOIN artists
+	ON albums.artist_id = artists.artist_id
+GROUP BY albums.album, artist
+ORDER BY album_popularity DESC
+LIMIT 5
+;
+
+-- How many artists are in Rolling Stone Magazine's "100 Greatest Artists of All Time"?
+SELECT COUNT(goat)
+FROM artists
+WHERE goat ="True"
+;
+SELECT artist
+FROM artists
+WHERE goat ="True"
+;