am Tue, dem 12.09.2006, um 10:39:25 -0400 mailte Chansup Byun folgendes:
> Hi,
>
> I searched how to convert a time interval to seconds but failed to find
> an example.
select extract('epoch' from timestamp);
A little example:
test=*> select '5 days 5 hours'::interval;
interval
-----------------
5 days 05:00:00
(1 row)
test=*> select extract ('epoch' from '5 days 5 hours'::interval);
date_part
-----------
450000
(1 row)
http://www.postgresql.org/docs/8.1/interactive/functions-datetime.html#FUNCTIONS-DATETIME-EXTRACT
HTH, Andreas
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Andreas Kretschmer
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