Add more fun queries

It makes it easier to query this data.

sql/01.views.sql

@@ -0,0 +1,8 @@
+-- Create a view that's easier to query
+CREATE VIEW schedule_joined AS
+  SELECT seg.n   AS title,
+         c.n     AS caster,
+         s.jst   AS jst
+    FROM schedule s
+         JOIN      segment seg ON seg.id = s.segment_id
+         LEFT JOIN caster  c   ON c.id   = s.caster_id;

sql/queries.sql

@@ -19,7 +19,27 @@ SELECT seg.n AS title,
        JOIN segment seg ON seg.id = s.segment_id
        JOIN caster  c   ON c.id   = s.caster_id
  WHERE c.n = "&caster"
- ORDER BY n;
+ GROUP BY title
+ ORDER BY n DESC;
+
+-- segment distribution for caster using prejoined view
+SELECT title,
+       COUNT(title) AS appearances
+  FROM schedule_joined
+ WHERE caster = "&caster"
+ GROUP BY title
+ ORDER BY n DESC;
+
+-- appearances by caster
+SELECT caster,
+       COUNT(caster) AS appearances
+  FROM schedule_joined
+ WHERE caster IS NOT NULL
+ GROUP BY caster
+ ORDER BY appearances DESC, caster ASC;
 
 -- list of all known casters
 SELECT * FROM caster;
+
+-- list of all segments
+SELECT * FROM segment;