FROM_TZ converts a timestamp value and a time zone to a TIMESTAMP WITH TIME ZONE value. time_zone_value is a character string in the format 'TZH:TZM' or a character expression that returns a string in TZR with optional TZD format.
The following example returns a timestamp value to TIMESTAMP WITH TIME ZONE:
SELECT FROM_TZ(TIMESTAMP '2000-03-28 08:00:00', '3:00') FROM DUAL; FROM_TZ(TIMESTAMP'2000-03-2808:00:00','3:00') --------------------------------------------------------------- 28-MAR-00 08.00.000000000 AM +03:00