Обсуждение: 9.2 Beta: intersection of daterange
I'm currently doing some tests on range types: tests=# SELECT int8range(5,15) * int8range(10,20) AS intersection; intersection -------------- [10,15) (1 Zeile) tests=# tests=# SELECT '[2010-03-15,2010-05-22)'::daterange * '[2010-01-04,)'::daterange AS intersection; intersection ------------------------- [2010-03-15,2010-05-22) (1 Zeile) Does the second query trigger a bug or am I misunderstanding something? I would expect [2010-01-04,2010-05-22) as result. Regards, Brar
I think result is ok... 2010-01-04 is not inside first range...
Sent from my Windows Phone
From: Brar Piening
Sent: 16/05/2012 09:53
To: pgsql-hackers
Subject: [HACKERS] 9.2 Beta: intersection of daterange
I'm currently doing some tests on range types:
tests=# SELECT int8range(5,15) * int8range(10,20) AS intersection;
intersection
--------------
[10,15)
(1 Zeile)
tests=#
tests=# SELECT '[2010-03-15,2010-05-22)'::daterange *
'[2010-01-04,)'::daterange AS intersection;
intersection
-------------------------
[2010-03-15,2010-05-22)
(1 Zeile)
Does the second query trigger a bug or am I misunderstanding something?
I would expect [2010-01-04,2010-05-22) as result.
Regards,
Brar
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
Misa Simic wrote: > I think result is ok... 2010-01-04 is not inside first range... Staring at my query for five minutes obviously didn't prevent me from creating that noise. I meant to query "SELECT '[2010-03-15,2010-05-22)'::daterange * '[2010-04-01,)'::daterange AS intersection;" which gives the expected result. Sorry for the noise! Regards, Brar
I think result is ok... 2010-01-04 is not inside first range... Sent from my Windows Phone From: Brar Piening Sent: 16/05/2012 09:53 To: pgsql-hackers Subject: [HACKERS] 9.2 Beta: intersection of daterange I'm currently doing some tests on range types: tests=# SELECT int8range(5,15) * int8range(10,20) AS intersection; intersection -------------- [10,15) (1 Zeile) tests=# tests=# SELECT '[2010-03-15,2010-05-22)'::daterange * '[2010-01-04,)'::daterange AS intersection; intersection ------------------------- [2010-03-15,2010-05-22) (1 Zeile) Does the second query trigger a bug or am I misunderstanding something? I would expect [2010-01-04,2010-05-22) as result. Regards, Brar -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
On 5/16/12 1:40 AM, Brar Piening wrote: > Misa Simic wrote: >> I think result is ok... 2010-01-04 is not inside first range... > > Staring at my query for five minutes obviously didn't prevent me from > creating that noise. > > I meant to query "SELECT '[2010-03-15,2010-05-22)'::daterange * > '[2010-04-01,)'::daterange AS intersection;" which gives the expected > result. > > Sorry for the noise! Thanks for testing! You've inadvertently done a positive test, which is a good thing ... -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com