smarter tags update trigger

share/schema.sql

@@ -110,8 +110,23 @@ CREATE TRIGGER IF NOT EXISTS create_tags AFTER INSERT ON source_files
 BEGIN
 	INSERT INTO tags (source_file,last_change) VALUES (new.id,0);
 END;
-CREATE TRIGGER IF NOT EXISTS force_destination_update_on_tag_update
+DROP TRIGGER IF EXISTS force_destination_update_on_tag_update;
-	AFTER UPDATE ON tags
+CREATE TRIGGER force_destination_update_on_tag_update
+	AFTER UPDATE OF
+		genre,
+		albumartist,
+		year,
+		album,
+		disc,
+		artist,
+		track,
+		title,
+		composer,
+		performer,
+		rate,
+		channels,
+		bitrate
+	ON tags
 BEGIN
 	UPDATE destination_files SET last_change=0
 	WHERE source_file_id=old.source_file;