Challenge: Decades
Tarefa
Swipe to start coding
- Group songs into decades. Your result should record in such a format: Decade, songs.id, songs.title, songs.price. For example:
1970 5 Time 200
1970 4 Stairway to Heaven 510
1980 16 Billie Jean 1200
And so on for all the songs.
For songs from one decade, sort them, starting from the most expensive.
- Change your query to not include albums with the undefined decade.
Solução
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SELECT albums.year - albums.year % 10 AS year, songs.id, songs.title, songs.price
FROM songs
INNER JOIN albums
ON albums.id = songs.album_id
WHERE year is not NULL
ORDER BY year, songs.price DESC
Tudo estava claro?
Obrigado pelo seu feedback!
Seção 3. Capítulo 4
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SELECT _ _ _ AS year, _ _ _
FROM songs
INNER JOIN _ _ _
WHERE _ _ _
ORDER BY _ _ _
Query Result| No query executed yet... |
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