In this example, the current timestamp is:
Current TimeStamp(6) -------------------------------- 2010-03-09 19:23:27.620000+00:00
The following statement converts the TIME value '08:30:00' to a TIME WITH TIME ZONE value, where the time zone displacement is based on the time zone string, 'America Pacific'.
SELECT CAST(TIME '08:30:00' AS TIME(0) WITH TIME ZONE AT 'America Pacific'); 08:30:00 -------------- 00:30:00-08:00