On Tue, Sep 12, 2006 at 10:39:25AM -0400, Chansup Byun wrote:
> I searched how to convert a time interval to seconds but failed to find
> an example.
Searching the list archives for "interval to seconds" returns many
examples. See also "Date/Time Functions and Operators" in the
documentation.
http://archives.postgresql.org/http://www.postgresql.org/docs/8.1/interactive/functions-datetime.html
EXTRACT(EPOCH FROM interval_value)
> I want to convert the following wait_time column into seconds. How can I
> do that? The datatype for the wait_time is time without timezone.
>
> job_number | task_number | submission_time | wait_time
> ------------+-------------+---------------------+-----------
> 56 | 0 | 2006-04-13 08:47:53 | 00:01:28
Does wait_time represent a duration? If so then why is it a time
without timezone instead of an interval?
--
Michael Fuhr