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Playlist Genre Coverage

intermediate~10 min25 pts
📊 View Insights

Problem

Identify playlists with the broadest genre diversity for the "Discover" carousel.

Schema: Playlist

ColumnType
PlaylistIdINTEGER (PK)
NameTEXT

Schema: PlaylistTrack

ColumnType
PlaylistIdINTEGER (FK)
TrackIdINTEGER (FK)

Schema: Track

ColumnType
TrackIdINTEGER (PK)
NameTEXT NOT NULL
AlbumIdINTEGER (FK → Album)
MediaTypeIdINTEGER (FK → MediaType)
GenreIdINTEGER (FK → Genre)
ComposerTEXT
MillisecondsINTEGER NOT NULL
BytesINTEGER
UnitPriceNUMERIC(10,2) NOT NULL

Schema: Genre

ColumnType
GenreIdINTEGER (PK)
NameTEXT

Requirements:

  • For each playlist, return PlaylistName, TrackCount, DistinctGenres
  • Only include playlists with at least 5 distinct genres
  • Sort by DistinctGenres descending, then TrackCount descending
  • Limit to 10 rows
JOINMultiple TablesCOUNT DISTINCTGROUP BYHAVING
📊
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SQL Editor

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Topfolio

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company

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