Re-added SQL scripts

sql/List Albums by Artist.sql

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+SELECT al.Title, ar.Name, al.Genre, al.Released, al.CoverUrl
+FROM ARTISTS ar
+INNER JOIN ALBUMS al ON al.ArtistId = ar.Id
+WHERE ar.Name = 'The Beatles'
+ORDER BY al.Title ASC;

sql/List Artists.sql

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+SELECT ar.Name
+FROM ARTISTS ar
+ORDER BY ar.Name ASC;

sql/List Tracks for Album.sql

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+SELECT DISTINCT al.Title, ar.Name, t.Number, t.Title, strftime('%M:%S', (t.Duration / 1000), 'unixepoch') AS "Duration"
+FROM ARTISTS ar
+INNER JOIN ALBUMS al ON al.ArtistId = ar.Id
+INNER JOIN TRACKS t ON t.AlbumId = al.Id
+WHERE ar.Name = 'The Beatles'
+AND al.Title = 'The Beatles'
+ORDER BY t.Number ASC;

sql/Summarise By Artist.sql

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+WITH ARTIST_SPEND ( Id, Spend ) AS
+(
+    SELECT      al.ArtistId, SUM( al.Price )
+    FROM        ALBUMS al
+    GROUP BY    al.ArtistId 
+)
+SELECT      a.Id,
+            a.Name,
+            COUNT( DISTINCT al.Id ) AS "Albums",
+            COUNT( DISTINCT t.Id ) AS "Tracks",
+            asp.Spend AS "Spend"
+FROM        ARTIST_SPEND asp
+INNER JOIN  ARTISTS a ON a.Id = asp.Id
+INNER JOIN  ALBUMS al ON al.ArtistId = a.Id
+INNER JOIN  TRACKS t ON t.AlbumId = al.Id
+WHERE       IFNULL( al.IsWishListItem, 0 ) = 0
+GROUP BY    a.Id, a.Name
+ORDER BY    a.Name ASC

sql/Summarise By Genre.sql

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+WITH ALBUM_SUMMARY ( Id, ArtistId, Genre, Tracks, Price, IsWishListItem ) AS
+(
+    SELECT a.Id, a.ArtistId, a.Genre, COUNT( t.Id ), IFNULL( a.Price, 0 ), IFNULL( a.IsWishListItem, 0) 
+    FROM ALBUMS a
+    INNER JOIN TRACKS t ON t.AlbumId = a.Id
+    GROUP BY a.Id, a.ArtistId, a.Genre, a.Price
+)
+SELECT Genre, COUNT( DISTINCT ArtistId) AS "Artists", COUNT( DISTINCT Id ) AS "Albums", SUM( Tracks ) AS "Tracks", SUM( Price ) AS "Spend"
+FROM ALBUM_SUMMARY
+WHERE IsWishListItem = 0
+GROUP BY Genre
+ORDER BY Genre ASC;