| 21. 8. INTERVAL |
| 21. 8. 1. | INTERVAL includes two datatypes that allow you to set appropriate durations more precisely | | |
| 21. 8. 2. | Interval value expressions | | |
| 21. 8. 3. | DAY TO SECOND examples | | |
| 21. 8. 4. | workarounds for defining intervals | | |
| 21. 8. 5. | Add some years and months | | |
| 21. 8. 6. | Add some days, hours, minutes, and seconds | | |
| 21. 8. 7. | Add 1 year, 2 months, 3 days, 4 hours, 5 minutes, 6.7 seconds | | |
| 21. 8. 8. | Adding and subtracting intervals | | |
| 21. 8. 9. | Interval multiplication | | |
| 21. 8. 10. | length of service for INTERVAL YEAR TO MONTH | | |
| 21. 8. 11. | Show some interval division | | |
| 21. 8. 12. | Storing elapsed time with INTERVAL DAY TO SECOND | | |
| 21. 8. 13. | Use INTERVAL types | | |
| 21. 8. 14. | Add date interval to timestamp | | |
| 21. 8. 15. | Double the interval | | |