move constraints tests to separate script file

0_runAllScripts.sql

@@ -60,3 +60,6 @@ CREATE DATABASE :database WITH OWNER :user ENCODING 'UTF8';
 -- query the database
 \ir 5_queries.sql
 
+-- demonstrate constraints in action
+\ir 6_constraints_tests.sql
+

5_queries.sql

@@ -82,35 +82,3 @@ SELECT * FROM GutVerdienende;
 
 -- forget all changes made since BEGIN
 ROLLBACK;
-
--- Constraints Tests
-
--- do not alter contents of the database persistently
-DO
-$$BEGIN
-   ALTER TABLE Angestellter
-   ADD CONSTRAINT check_Salaer
-      CHECK (Salaer between 1000 and 20000);
-
-   UPDATE angestellter SET salaer=30000 where persnr = 1100;
-   select * from angestellter WHERE persnr = 1100;
--- forget all changes made since BEGIN
-EXCEPTION
-   WHEN integrity_constraint_violation THEN
-      RAISE NOTICE 'The constraint worked and made the UPDATE fail with message: %', SQLERRM;
-END;$$;
-
--- do not alter contents of the database persistently
-DO
-$$BEGIN
-   ALTER TABLE ProjektZuteilung
-   ADD CONSTRAINT check_Zeitanteil
-      CHECK (Zeitanteil between 10 and 90);
-
-   UPDATE ProjektZuteilung SET Zeitanteil=99 where persnr = 1100;
-   select * from ProjektZuteilung WHERE persnr = 1100;
--- forget all changes made since BEGIN
-EXCEPTION
-   WHEN integrity_constraint_violation THEN
-      RAISE NOTICE 'The constraint worked and made the UPDATE fail with message: %', SQLERRM;
-END;$$;

6_constraints_tests.sql

+-- do not alter contents of the database persistently
+DO
+$$BEGIN
+   ALTER TABLE Angestellter
+   ADD CONSTRAINT check_Salaer
+      CHECK (Salaer between 1000 and 20000);
+
+   UPDATE angestellter SET salaer=30000 where persnr = 1100;
+   select * from angestellter WHERE persnr = 1100;
+-- forget all changes made since BEGIN
+EXCEPTION
+   WHEN integrity_constraint_violation THEN
+      RAISE NOTICE 'The constraint worked and made the UPDATE fail with message: %', SQLERRM;
+END;$$;
+
+-- do not alter contents of the database persistently
+DO
+$$BEGIN
+   ALTER TABLE ProjektZuteilung
+   ADD CONSTRAINT check_Zeitanteil
+      CHECK (Zeitanteil between 10 and 90);
+
+   UPDATE ProjektZuteilung SET Zeitanteil=99 where persnr = 1100;
+   select * from ProjektZuteilung WHERE persnr = 1100;
+-- forget all changes made since BEGIN
+EXCEPTION
+   WHEN integrity_constraint_violation THEN
+      RAISE NOTICE 'The constraint worked and made the UPDATE fail with message: %', SQLERRM;
+END;$$;