Maybe this helps you:
starttime datetime default now(),
endtime datetime default (now() + interval('1 hour'))
----- Original Message -----
From: "Stuart" <sfbarbee@yahoo.com>
To: <pgsql-general@postgresql.org>
Sent: 2001. április 30. 21:18
Subject: [GENERAL] datetime arithmatic
> Folks,
>
> I am new to postgresql 7.1 and like what I see so far. How is datetime
> arithmatic performed in postgres. I have a table with start date/time
> and end date/time(datetime data type) fields and want to set the default
> end time to 1 hour later than the start time. Is there a way to do
> this. My attempts to set the default value for the field using:
>
> starttime datetime default now(),
> endtime datetime default now() + xxx.xxx,
>
> has yielded only either a datetime with time set to 00:00 or only a
> date!
>
> Thanks for the help.
>
> Stuart
>
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