Re: Problem with intervals

From: Bob Smith <bsmith(at)h-e(dot)com>
To: "Alexander M(dot) Pravking" <fduch(at)antar(dot)bryansk(dot)ru>
Cc: pgsql-sql <pgsql-sql(at)postgresql(dot)org>
Subject: Re: Problem with intervals
Date: 2003-12-02 20:55:46
Message-ID: E6FD177F-2509-11D8-8F43-0003933DD370@h-e.com
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On Tuesday, Dec 2, 2003, at 03:53 US/Pacific, Alexander M. Pravking
wrote:

> On Mon, Dec 01, 2003 at 09:09:20PM -0800, Bob Smith wrote:
>> I'm getting an unexpected result using intervals in an expression:
>>
>> select ('2003-10-26 0:00:00'::timestamp + '1 day'::interval)::date;
>> date
>> ------------
>> 2003-10-26
>> (1 row)
>
> Try using '2003-10-26 0:00:00'::date + 1;
> integers do not lie ;-)

Aha! That solves my problem for now. I had also discovered that using
'25 hours'::interval works, but the integer approach is better.

> It has been discussed several times, Tom Lane offered to add 'day' as
> a separate interval unit (like 'second' and 'month' at this moment),
> but noone took a shot at it, AFAIK.
>
>
> Note also, that in 7.3 "timestamp" means "timestamp without time zone",
> while in 7.2 it's "timestamp with time zone".

Yet another reason to upgrade, I guess I'm gonna have to do it soon...

Thanks for your help!

Bob S.

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