Re: question with times and intervals

Richard Huxton <dev@archonet.com> schrieb:

> Now (upper_time - lower_time) is the interval you want and summing them 
> will give you your answer.
> 
> Any help?

Yes, thanks.

But, i remember a little function that i wrote in the past:
http://a-kretschmer.de/tools/time_intersect.sql

And now i have a solution (i hope):

test=# select id, status,
test-#         sum((time_intersect(t_start, t_end, '2006/01/21 00:00:00'::timestamptz, '2006/01/22
23:59:59'::timestamptz)).t2-
 
test(#                 (time_intersect(t_start, t_end, '2006/01/21 00:00:00+1'::timestamptz, '2006/01/22
23:59:59+1'::timestamptz)).t1)
test-# from status_log
test-# where  (t_start, t_end) overlaps ('2006/01/21 00:00:00+1'::timestamptz, '2006/01/22 23:59:59'::timestamptz)
test-# group by id, status
test-# order by 1,2;id | status |   sum
----+--------+---------- 1 |      1 | 32:00:00 1 |      2 | 15:59:59
(2 rows)


Okay, now i can write a function similar above which returns the
interval and the i can sum() this.


Thanks, Andreas
-- 
Really, I'm not out to destroy Microsoft. That will just be a completely
unintentional side effect.                              (Linus Torvalds)
"If I was god, I would recompile penguin with --enable-fly."    (unknow)
Kaufbach, Saxony, Germany, Europe.              N 51.05082°, E 13.56889°