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Multiple Aggregations in One Query

beginner~5 min10 pts
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Problem

Calculate multiple statistics about tracks in a single query: count, average length, min price, max price, and total bytes.

Write a query that calculates several aggregate statistics from the Track table.

Schema: Track

ColumnType
TrackIdINTEGER (Primary Key)
NameTEXT
AlbumIdINTEGER (Foreign Key → Album.AlbumId)
MediaTypeIdINTEGER (Foreign Key)
GenreIdINTEGER (Foreign Key → Genre.GenreId)
ComposerTEXT
MillisecondsINTEGER
BytesINTEGER
UnitPriceNUMERIC(10,2)

Requirements:

  • Count total tracks as TotalTracks
  • Average duration in milliseconds as AvgDuration
  • Minimum price as MinPrice
  • Maximum price as MaxPrice
  • Total size in bytes as TotalBytes
  • Round AvgDuration to 2 decimal places
AggregationCOUNTAVGMINMAXSUM
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SQL Editor

Run your code to see the result here.

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