Initial commit

Lts/Tests/DatabaseInitialisation/create_views.sql

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+-- # $Id$
+-- # $HeadURL$
+-- # $Author$
+
+-- View for showing exerciseState changes
+DROP VIEW IF EXISTS exm.getExerciseStateChanges;
+CREATE VIEW exm.getExerciseStateChanges AS
+(
+  SELECT e.name AS ex_name, e.id AS exercise_id, 
+         s1.id AS s1_id, es1.name || '-' || s1.exercise_state_id AS state_old,
+         s2.id AS s2_id, es2.name || '-' || s2.exercise_state_id AS state_new
+  FROM exm.exercise_state_change s1, exm.exercise_state_change s2,
+       exm.exercise_state es1, exm.exercise_state es2,
+       exm.exercise e
+  WHERE s2.id - 1 = s1.id
+    AND e.id = s1.exercise_id
+    AND es1.id = s1.exercise_state_id
+    AND es2.id = s2.exercise_state_id
+);
+