Use TIMESTAMP in insert statement to add value to interval type column : Time Interval « SQL Data Types « Oracle PL/SQL Tutorial

1. Oracle PL/SQL Tutorial
2. SQL Data Types
3. Time Interval

SQL> create table myTable(
  2        break_time   interval day(1) to second(2)
  3  );

Table created.

SQL>
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
-0 00:30:00.00

4 rows selected.

SQL>
SQL> drop table myTable;

Table dropped.