> The advantage of specifying a + and a - in the type interface is that > the unit definition can then be specified as part of the type > declaration itself. So you can do: > > CREATE TYPE ts_sec AS RANGE OVER timestamp (UNIT = '1s'); > CREATE TYPE ts_min AS RANGE OVER timestamp (UNIT = '1m'); > > All of the stuff about defining + and - is hidden from the user - it's > part of the type interface, which is pre-created. >
The disadvantage is that it does not permit irregularly spaced units. -Nathan -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
