select hire_date,
hire_date+10 add_10_days
from hr.employees| HIRE_DATE | ADD_10_DAYS | 17-JUN-03 | 27-JUN-03 | 21-SEP-05 | 01-OCT-05 | 13-JAN-01 | 23-JAN-01 | 03-JAN-06 | 13-JAN-06 | 21-MAY-07 | 31-MAY-07 | 25-JUN-05 | 05-JUL-05 | 05-FEB-06 | 15-FEB-06 | 07-FEB-07 | 17-FEB-07 | 17-AUG-02 | 27-AUG-02 | 16-AUG-02 | 26-AUG-02 | 28-SEP-05 | 08-OCT-05 | 30-SEP-05 | 10-OCT-05 | 07-MAR-06 | 17-MAR-06 | 07-DEC-07 | 17-DEC-07 | 07-DEC-02 | 17-DEC-02 | 18-MAY-03 | 28-MAY-03 | 24-DEC-05 | 03-JAN-06 | 24-JUL-05 | 03-AUG-05 | 15-NOV-06 | 25-NOV-06 | 10-AUG-07 | 20-AUG-07 | 18-JUL-04 | 28-JUL-04 | 10-APR-05 | 20-APR-05 | 01-MAY-03 | 11-MAY-03 | 10-OCT-05 | 20-OCT-05 | 16-NOV-07 | 26-NOV-07 | 16-JUL-05 | 26-JUL-05 | 28-SEP-06 | 08-OCT-06 | 14-JAN-07 | 24-JAN-07 | 08-MAR-08 | 18-MAR-08 | 20-AUG-05 | 30-AUG-05 | 30-OCT-05 | 09-NOV-05 | 16-FEB-05 | 26-FEB-05 | 10-APR-07 | 20-APR-07 | 14-JUN-04 | 24-JUN-04 | 26-AUG-06 | 05-SEP-06 | 12-DEC-07 | 22-DEC-07 | 06-FEB-08 | 16-FEB-08 | 14-JUL-03 | 24-JUL-03 | 26-OCT-05 | 05-NOV-05 | 12-FEB-06 | 22-FEB-06 | 06-APR-06 | 16-APR-06 | 17-OCT-03 | 27-OCT-03 | 29-JAN-05 | 08-FEB-05 | 15-MAR-06 | 25-MAR-06 | 09-JUL-06 | 19-JUL-06 | 01-OCT-04 | 11-OCT-04 | 05-JAN-05 | 15-JAN-05 | 10-MAR-05 | 20-MAR-05 | 15-OCT-07 | 25-OCT-07 | 29-JAN-08 | 08-FEB-08 |
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