SQL>
SQL> DECLARE
2 A INTERVAL YEAR TO MONTH;
3 B INTERVAL YEAR TO MONTH;
4 C INTERVAL DAY TO SECOND;
5 D INTERVAL DAY TO SECOND;
6 BEGIN
7 SELECT INTERVAL '1:02' HOUR TO MINUTE
8 INTO D
9 FROM dual;
10
11 D := INTERVAL '1' HOUR + INTERVAL '02' MINUTE;
12
13 END;
14 /
PL/SQL procedure successfully completed.
SQL>