SQL>
SQL> set serveroutput on size 500000
SQL>
SQL> DECLARE
2
3 year_number PLS_INTEGER := 1992;
4
5 BEGIN
6
7 <>
8 WHILE year_number <= 1995
9 LOOP
10
11 dbms_output.put_line('year = '||year_number);
12
13 <>
14 FOR month_number IN 1 .. 12
15 LOOP
16 dbms_output.put_line('...and month = '||month_number);
17
18 END LOOP month_loop;
19
20 year_number := year_number + 2;
21
22 END LOOP year_loop;
23
24 END;
25 /
year = 1992
...and month = 1
...and month = 2
...and month = 3
...and month = 4
...and month = 5
...and month = 6
...and month = 7
...and month = 8
...and month = 9
...and month = 10
...and month = 11
...and month = 12
year = 1994
...and month = 1
...and month = 2
...and month = 3
...and month = 4
...and month = 5
...and month = 6
...and month = 7
...and month = 8
...and month = 9
...and month = 10
...and month = 11
...and month = 12
PL/SQL procedure successfully completed.
SQL>