Andreas Joseph Krogh wrote:
On Sunday 16 September 2007 13:14:27 Andreas Kretschmer wrote:
Andreas Joseph Krogh <[EMAIL PROTECTED]> schrieb:
Hi all. Any hint on how to format this interval as number of hour/seconds
etc? select age('2007-09-22 17:00'::timestamp, '2000-02-20
18:00'::timestamp); age
-------------------------------
7 years 7 mons 1 day 23:00:00
You can use extract(epoch, from ...) like this:
test=*# select extract(epoch from '2007-09-22 17:00'::timestamp) - extract
(epoch from '2000-02-20 18:00'::timestamp); ?column?
-----------
239407200
(1 row)
Now you can calculate the hours and so on.
Yes, this works fine for dates >= 1970, but I'm looking for a more general
solution which takes an arbitrary interval as input. The reason why I'm using
PG to calculate this is 'cause it takes 25/23 hour days, leapyears etc. into
account when calculating intervals.
Is that all you use it for?? ;-)
You may want to add the timezone to get the effect of daylight savings.
postgres=# select age('2007-03-25 7:00:00'::timestamptz, '2007-03-25
1:00:00'::timestamptz);
age
----------
06:00:00
(1 row)
postgres=# select age('2007-03-25 7:00:00+9:30'::timestamptz,
'2007-03-25 1:00:00+9:30'::timestamptz);
age
----------
05:00:00
(1 row)
I haven't used intervals much so I may be missing something.
I get the idea you want the interval to be expressed as 2,765 days and
23 hours or 66,383 hours, which I think would be useful (more so for
shorter intervals).
I am thinking the exact function you are after isn't there - from what I
can find a larger interval is always given as x years y months z days...
which is why extracting the epoch is the easiest point to start your calcs.
Maybe this can be a feature request - functions to give an interval in
total number of days/hours/minutes instead of years months days
--
Shane Ambler
[EMAIL PROTECTED]
Get Sheeky @ http://Sheeky.Biz
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