Description
In order to provide the following features, INTERVAL Type is required.
babokim# select timestamp '2001-09-28 01:00' + interval '23 hours'; ?column? --------------------- 2001-09-29 00:00:00 (1 row) babokim=# select date '2001-10-01' - date '2001-09-28'; ?column? ---------- 3 (1 row)