In the following example, assume t1 is a table with an INTEGER column c1 and a PERIOD(DATE) column c2 and t2 is a table with an INTEGER column a and two DATE columns b and c.
This example shows the Period value constructor used in two INSERT statements.
INSERT INTO t1 VALUES (1, PERIOD(DATE '2005-02-03', DATE '2006-02-04')); INSERT INTO t1 SELECT a, PERIOD(b, c) FROM t2;