Added artist statistics report file

src/MusicCatalogue.Logic/Sql/ArtistStatistics.sql

@@ -0,0 +1,18 @@
+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 ) = $wishlist
+GROUP BY    a.Id, a.Name
+ORDER BY    a.Name ASC

src/MusicCatalogue.Logic/Sql/GenreStatistics.sql

@@ -1,12 +1,21 @@
 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      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 = $wishlist
-GROUP BY Genre
-ORDER BY Genre ASC;
+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 = $wishlist
+GROUP BY    Genre
+ORDER BY    Genre ASC;