In the following example, a TIMESTAMP(6) literal is cast as PERIOD(DATE). The result beginning element is set to the date portion of the source value. The result ending element is set to result beginning bound plus INTERVAL '1' DAY.
SELECT CAST(TIMESTAMP '2005-02-03 12:12:12.340000' AS PERIOD(DATE));
The following is returned:
('2005-02-03', '2005-02-04')