The following AS OF query retrieves all table rows that were valid at 2002-01-01.
SELECT * FROM employee_vt FOR VALIDTIME AS OF DATE’2002-01-01’; eid ename terms job_start job_end ---- ----- ----- ---------- ----------- 1001 Sania TW08 2002/01/01 2006/12/31 1004 Fred PW12 2001/05/01 9999/12/31
Only Sania and Fred had jobs with valid-time periods that include 2002-01-01.
Temporal queries can specify times in the future to return the rows that will be, or will still be valid at a future time:
SELECT * FROM employee_vt FOR VALIDTIME AS OF DATE’2015-02-01’; eid ename terms job_start job_end ---- ----- ----- ---------- ----------- 1005 Alice PW11 2005/12/01 9999/12/31 1010 Mike TW07 2015/01/01 2016/12/31 1004 Fred PW12 2001/05/01 9999/12/31