ü13 feddich

scripts_13.sql

@@ -0,0 +1,29 @@
+-- section 1
+CREATE OR REPLACE PROCEDURE Discount
+AS
+  CURSOR c_group_discount
+  IS
+  SELECT distinct s.course_no, c.description
+  FROM section s, enrollment e, course c
+  WHERE s.section_id = e.section_id
+  AND c.course_no = s.course_no
+  GROUP BY s.course_no, c.description,
+  e.section_id, s.section_id
+  HAVING COUNT(*) >=8;
+
+BEGIN
+  FOR r_group_discount IN c_group_discount LOOP
+    UPDATE course
+    SET cost = cost * .95
+    WHERE course_no = r_group_discount.course_no;
+    DBMS_OUTPUT.PUT_LINE('A 5% discount has been given to '||
+    r_group_discount.course_no||' '||r_group_discount.description);
+  END LOOP;
+END;
+
+-- section 3
+CREATE OR REPLACE PACKAGE school_api as
+  PROCEDURE discount;
+  FUNCTION new_instructor_id
+  RETURN instructor.instructor_id%TYPE;
+END school_api;