SQL>
SQL> CREATE TABLE myTable (
2 id INTEGER,
3 duration INTERVAL YEAR(3) TO MONTH
4 );
Table created.
SQL> INSERT INTO myTable (id, duration)VALUES (4, INTERVAL '1-3' YEAR TO MONTH);
1 row created.
SQL>
SQL> select * from myTable;
ID DURATION
---------- ---------------------------------------------------------------------------
4 +001-03
SQL>
SQL> drop table myTable;
Table dropped.
SQL>