Re: Age function - Mailing list pgsql-general

From Mihai Gheorghiu
Subject Re: Age function
Date
Msg-id 001201c2712b$3eb86700$6e646464@New6.Travel
Whole thread Raw
In response to Age function  ("Mihai Gheorghiu" <tanethq@earthlink.net>)
List pgsql-general
Thanks for the daylight savings tip. However:

SELECT age('10/10/02' :: date, '1/10/02' :: date);
8mons 30days 23:00

SELECT age(date('10/10/02'), date('1/10/02'));
8mons 30days 23:00

When I cast to date, I should get 9 months.
It looks like it works timestamp, with hours and fractions thereof set to
zero. It should not take into account daylight savings, either.
I searched the archives, and this topic has come up more than once over the
past two years.

-----Original Message-----
From: Joe Conway <mail@joeconway.com>
To: Mihai Gheorghiu <tanethq@earthlink.net>
Cc: pgsql-general@postgresql.org <pgsql-general@postgresql.org>
Date: Thursday, October 10, 2002 6:09 PM
Subject: Re: [GENERAL] Age function


>Mihai Gheorghiu wrote:
>> PG7.2.1 on RH7.3
>>
>> SELECT AGE ('10/10/02', '1/10/02');
>> 8mons 30days 23:00
>>
>> SELECT AGE ('10/10/02 4:00PM', '1/10/02');
>> 9mons 15:00
>>
>> Please help.
>> Thank you all.
>
>Not clear what you think the problem is. If it is the apparent 1 hr
>discrepancy, I think that is due to the fact that January 10th is
"standard"
>time for your timezone whereas October 10th is still "daylight savings"
time.
>Try two dates within daylight savings time:
>
>test=# SELECT AGE ('10/10/02 4:00PM', '7/10/02');
>      age
>--------------
>  3 mons 16:00
>(1 row)
>
>test=# SELECT AGE ('10/10/02', '7/10/02');
>   age
>--------
>  3 mons
>(1 row)
>
>Looks correct to me.
>
>Joe
>
>
>


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