Click here to Skip to main content
Click here to Skip to main content

sqlTunes - Query Your iTunes Library

, 7 Mar 2008
Rate this:
Please Sign up or sign in to vote.
sqlTunes is a small tool that exports iTunes library information to the SQL server.

Introduction

I wrote this tiny tool to compensate the limitations of the otherwise perfect iTunes player in reports generation. The program exports your iTunes library data to a Microsoft SQL Server (hence the name – sqlTunes) database which can then be queried using T-SQL. I am going to quickly review the underlying data structure of the iTunes library and then I will list some of the reports you can run on it.

Library Structure

iTunes stores the library data in two files – a proprietary binary file called iTunes Library.itl and its XML counterpart called iTunes Music Library.xml. Both files are located in the My Documents\My Music\iTunes\ folder.

The XML file is nothing more than just a representation of a generic dictionary. First it lists the library information, then the track data, and in the end the playlists. Here is a sample XML:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Major Version</key><integer>1</integer>
    <key>Minor Version</key><integer>1</integer>
    <key>Application Version</key><string>6.0.1</string>
    <key>Features</key><integer>1</integer>
    <key>Music Folder</key>
    <string>file://localhost/C:/Archive/Audio/iTunes/</string>
    <key>Library Persistent ID</key>
    <string>F8D57E57036B9A4E</string>
    <key>Tracks</key>
    <dict>
        <key>36</key>
        <dict>
            <key>Track ID</key><integer>36</integer>
            <key>Name</key><string>...</string>
            <key>Artist</key><string>...</string>
            <key>Album</key><string>...</string>
            ...
        </dict>
        ...
    </dict>
    <key>Playlists</key>
    <array>
        ...
    </array>
</dict>
</plist>

As simple as that! sqlTunes ignores everything except the Tracks section which it reads recursively and fills in the Dictionary<string, object> object. It then builds INSERT statements and exports the data to the SQL Server.

SQL Structure

The structure is an exact copy of the library data. The database consists of one table called Track which is defined as:

CREATE TABLE [dbo].[Track] (
    [Track ID] [int] NOT NULL,
    [Name] [nvarchar] (200) NULL,
    [Artist] [nvarchar] (100) NULL,
    [Album] [nvarchar] (100) NULL,
    [Grouping] [nvarchar] (100) NULL,
    [Genre] [nvarchar] (100) NULL,
    [Kind] [nvarchar] (100) NULL,
    [Size] [int] NULL,
    [Total Time] [int] NULL,
    [Track Number] [int] NULL,
    [Track Count] [int] NULL,
    [Year] [int] NULL,
    [Date Modified] [datetime] NULL,
    [Date Added] [datetime] NULL,
    [Bit Rate] [int] NULL,
    [Sample Rate] [int] NULL,
    [Comments] [nvarchar] (200) NULL,
    [Play Count] [int] NULL,
    [Play Date] [bigint] NULL,
    [Play Date UTC] [datetime] NULL,
    [Rating] [int] NULL,
    [Track Type] [nvarchar] (100) NULL,
    [Location] [nvarchar] (500) NULL,
    [File Folder Count] [int] NULL,
    [Library Folder Count] [int] NULL
) ON [PRIMARY]

This is probably not the best example to learn database normalisation but certainly enough to run our reports. sqlTunes will delete and re-create the table on each run. The database must exist, it will not create it.

Reports

And finally, here is the fun part. Let us start with something simple, say we want to know the average bit rate of the entire library:

SELECT CAST(ROUND(AVG(CAST([Bit Rate] AS float)),2) AS varchar)
AS [Average Bit Rate]
FROM Track

Now, let us get something more useful. This query lists your entire album collection:

SELECT DISTINCT Artist, Album, [Year], Genre
FROM Track
ORDER BY Artist, [Year], Album

This is a more correct version, it lists only the full albums. You will need to set the Track Count values to use it effectively:

SELECT Artist, Album, [Year], Genre
FROM Track
GROUP BY Artist, [Year], Album, Genre
HAVING COUNT(*) = MAX([Track Count])
ORDER BY Artist, [Year], Album

Likewise, this one lists the incomplete albums:

SELECT Artist, [Year], Album, Genre
FROM Track
GROUP BY Artist, [Year], Album, Genre
HAVING COUNT(*) < MAX([Track Count])
ORDER BY Artist, [Year], Album

Want to know the albums without the Track Count value? Here you go:

SELECT DISTINCT Artist, Album, [Year], Genre
FROM Track
WHERE ISNULL([Track Count],0)=0
ORDER BY Artist, [Year], Album

This one returns all the rated albums sorted by their rating. Handy if you have MP3s but want to update your CD collection:

SELECT Artist, Album, [Year], COUNT(*) AS [Songs Rated],
AVG(CAST(Rating AS float)) AS [Album Rating]
FROM Track
WHERE Rating IS NOT NULL
GROUP BY Artist, Album, [Year]
ORDER BY [Album Rating] DESC, [Songs Rated] DESC

This is the same for artists, can be useful when you are looking for new albums to buy:

SELECT Artist, COUNT(*) AS [Songs Rated], AVG(CAST(Rating AS float)) AS [Artist Rating]
FROM Track
WHERE Rating IS NOT NULL
GROUP BY Artist
ORDER BY [Artist Rating] DESC, [Songs Rated] DESC

This query reveals your genre preferences:

SELECT Genre, AVG(CAST(Rating AS float)) AS [Genre Rating], COUNT(*) AS [Songs Rated]
FROM Track
WHERE Rating IS NOT NULL
GROUP BY Genre
ORDER BY [Genre Rating] DESC, [Songs Rated] DESC

Further Developments

If this program proves to be useful, I will continue developing it in these three directions:

  1. Adding more reports - Please do post your requests, my imagination is limited but I can speak T-SQL Smile | :)
  2. Enhancing the interface - E.g. run reports directly from sqlTunes.
  3. Support more databases - Most iTunes users do not have Microsoft SQL Server. A file based database like SQLite or even Access will do the job as well.

License

History

  • 2005-11-08: Initial version
  • 2008-03-04: iTunes 7 compatibility

License

This article, along with any associated source code and files, is licensed under The Creative Commons Attribution-ShareAlike 2.5 License

About the Author

Alexander Kojevnikov
Software Developer (Senior)
Australia Australia
No Biography provided

Comments and Discussions

 
SuggestionAdd 'Compilation' iTunes field PinmemberMember 1033575114-Oct-13 17:52 
GeneralMy vote of 5 PinmvpKanasz Robert26-Sep-12 4:58 
SuggestionLeast/Most Liked albums (Based on Rating tag) PinmemberAlfaEcoTangoRomeo8-Jun-12 7:17 
QuestionConnect to Access? PinmemberDrew Barnard3-Apr-12 13:06 
QuestionThanks and field request PinmemberMember 810174821-Jul-11 2:16 
GeneralThanks Pinmemberraskenn29-Oct-10 14:43 
GeneralMy vote of 5 Pinmemberraskenn29-Oct-10 14:40 
GeneraliTunes 8 PinmemberKilkenny827-Jul-09 0:38 
GeneralRe: iTunes 8 PinmemberAlexander Kojevnikov7-Jul-09 0:45 
GeneralDatabase Normalization Pinmemberidynamix27-Apr-09 6:49 
General"Composer" field PinmemberSteven de Mena30-Mar-08 19:45 
GeneraliTunes 7 PinmemberAlexander Kojevnikov7-Mar-08 12:26 
GeneralSuggestion... PinmemberMike Doyon7-Mar-08 11:31 
GeneralProblem running from source - Window class name is not valid. Pinmemberpccm24686-Jan-08 5:56 
QuestioniTunes 7+ PinmemberJeff S.17-Dec-07 12:27 
GeneralExtension for other databases and m3u Pinmemberj.wefer18-Nov-07 6:07 
GeneralUnable to connect PinmemberDavidoff19876-Nov-07 7:53 
Generalfeature request- output sql text file for mySQL Pinmemberalpineedge328-Apr-07 14:57 
QuestionHow about just reading the XML into a DataTable? PinmemberJoeRip15-Dec-06 15:39 
GeneralVerry cool until Itunes 7 PinmemberWebzenNJ28-Sep-06 6:34 
GeneralRe: Verry cool until Itunes 7 PinmemberAlexander Kojevnikov28-Sep-06 6:59 
QuestionRe: Verry cool until Itunes 7 Pinmemberstreamlines4-Jan-07 5:39 
GeneraliTunes 7.0 Pinmemberhootch9925-Sep-06 8:33 
AnswerRe: iTunes 7.0 PinmemberRichTeel25-May-07 7:42 
QuestionWhere's the Import? PinmemberCode Deamon4-Jul-06 2:29 
Questioncreate a file like itunes.sql Pinmemberdrubin4-Apr-06 12:12 
General(407) Proxy Authentication Required PinmemberSteve Crane15-Mar-06 2:29 
GeneralCan't Connect! Pinmemberrentonsa25-Jan-06 10:07 
GeneralRe: Can't Connect! PinmemberAlexander Kojevnikov26-Jan-06 13:48 
GeneralRe: Can't Connect! Pinmemberrentonsa19-Mar-06 6:27 
QuestionWhat about direct interaction? PinmemberUnderWing16-Jan-06 17:46 
AnswerRe: What about direct interaction? PinmemberAlexander Kojevnikov19-Jan-06 15:48 
GeneralSweet... PinmemberPatrick Luijpers16-Jan-06 10:13 
GeneralRe: Sweet... PinmemberAlexander Kojevnikov16-Jan-06 11:59 
GeneralExcellent! Pinmemberdaveburke23-Dec-05 11:52 
GeneralRe: Excellent! PinmemberAlexander Kojevnikov27-Dec-05 13:46 
GeneralSQLTunes is a trademarked name used by Pinmembervonkessel26-Nov-05 14:57 
GeneralRe: SQLTunes is a trademarked name used by PinmemberAlexander Kojevnikov26-Nov-05 19:22 
GeneralKind'a neat, but... Pinmemberjconwell8-Nov-05 5:17 
GeneralRe: Kind'a neat, but... PinmemberFZelle8-Nov-05 9:06 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

| Advertise | Privacy | Mobile
Web01 | 2.8.140721.1 | Last Updated 7 Mar 2008
Article Copyright 2005 by Alexander Kojevnikov
Everything else Copyright © CodeProject, 1999-2014
Terms of Service
Layout: fixed | fluid