SQL> create table myTable(
2 break_time interval day(1) to second(2)
3 );
Table created.
SQL>
SQL> insert into myTable (break_time )
2 values (TIMESTAMP '2001-09-03 12:47:00.000000' - TIMESTAMP '2001-09-03 13:13:00.000000' );
1 row created.
SQL>
SQL> insert into myTable ( break_time )
2 values ( TIMESTAMP '2001-09-03 13:35:00.000000' - TIMESTAMP '2001-09-03 13:39:00.000000' );
1 row created.
SQL>
SQL> insert into myTable ( break_time )
2 values (TIMESTAMP '2001-09-03 16:30:00.000000' - TIMESTAMP '2001-09-03 17:00:00.000000' );
1 row created.
SQL>
SQL> insert into myTable ( break_time )
2 values ( TIMESTAMP '2001-09-03 17:00:00.000000' - TIMESTAMP '2001-09-03 17:30:00.000000' );
1 row created.
SQL>
SQL> column break_time format a30
SQL>
SQL> select * from myTable;
BREAK_TIME
------------------------------
-0 00:26:00.00
-0 00:04:00.00
-0 00:30:00.00
4 rows selected.
SQL>
SQL> drop table myTable;
Table dropped.