Is this what you are looking for?
test=# select 'now'::time as test,'2003-05-30 14:51:38-06'::timestamptz
as stamp into temp cruft;
SELECT
test=# select test,stamp,test - stamp::time as diff from cruft;
test | stamp | diff
-----------------+------------------------+-----------------
15:09:28.862728 | 2003-05-30 14:51:38-06 | 00:17:50.862728
(1 row)
test=# select test,stamp,reltime(test - stamp::time) as diff from cruft;
test | stamp | diff
-----------------+------------------------+----------
15:09:28.862728 | 2003-05-30 14:51:38-06 | 00:17:50
(1 row)
test=# drop table cruft;
DROP TABLE
Guy
Katka a Daniel Dunajsky wrote:
> Hello All,
>
> I am looking for an advice how to do calculation with the time. I do
> have a column with datatype 'timestamp with time zone'. The value is
> '2003-03-22 07:53:56-07' for instance. I would like to select it from
> the table with result of '07:59:59' – '07:53:56', so the query should
> return '00:06:03'.
>
> Thank you for your time.
>
> DanielD
>
