I have been unable to find where it is mentioned that timestamptz can be
used as shorthand for 'timestamp with time zone'. I discovered I could use
it by trying it out after I saw someone else use it. Is this a new alias, or
has it been around for some time? I am using 9.0, and have not tried it on
earlier versions.
I think it would be helpful to note this somewhere on the Date/Time Types
page.
Chris