SQL> DECLARE
2 current VARCHAR2(9 CHAR);
3 element INTEGER;
4
5 TYPE months_varray IS VARRAY(12) OF STRING(9 CHAR);
6 TYPE calendar_table IS TABLE OF VARCHAR2(9 CHAR) INDEX BY VARCHAR2(9 CHAR);
7
8 month MONTHS_VARRAY := months_varray('January','February','March','April','May','June','July','August','September','October','November','December');
9
10 calendar CALENDAR_TABLE;
11 BEGIN
12 IF calendar.COUNT = 0 THEN
13 FOR i IN month.FIRST..month.LAST LOOP
14 calendar(month(i)) := TO_CHAR(i);
15 DBMS_OUTPUT.PUT_LINE('Index ['||month(i)||'] is ['||i||']');
16 END LOOP;
17
18 FOR i IN 1..calendar.COUNT LOOP
19 IF i = 1 THEN
20 current := calendar.FIRST;
21 element := calendar(current);
22 ELSE
23 IF calendar.NEXT(current) IS NOT NULL THEN
24 current := calendar.NEXT(current);
25 element := calendar(current);
26 ELSE
27 EXIT;
28 END IF;
29 END IF;
30
31 DBMS_OUTPUT.PUT_LINE('Index ['||current||'] is ['||element||']');
32 END LOOP;
33 END IF;
34 END;
35 /
Index [January] is [1]
Index [February] is [2]
Index [March] is [3]
Index [April] is [4]
Index [May] is [5]
Index [June] is [6]
Index [July] is [7]
Index [August] is [8]
Index [September] is [9]
Index [October] is [10]
Index [November] is [11]
Index [December] is [12]
Index [April] is [4]
Index [August] is [8]
Index [December] is [12]
Index [February] is [2]
Index [January] is [1]
Index [July] is [7]
Index [June] is [6]
Index [March] is [3]
Index [May] is [5]
Index [November] is [11]
Index [October] is [10]
Index [September] is [9]
PL/SQL procedure successfully completed.