Re: SQL solution for my JDBC timezone issue

From: Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>
To: Gavin Flower <GavinFlower(at)archidevsys(dot)co(dot)nz>, George Woodring <george(dot)woodring(at)iglass(dot)net>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Dave Cramer <pg(at)fastcrypt(dot)com>, pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: Re: SQL solution for my JDBC timezone issue
Date: 2015-02-24 19:58:37
Message-ID: 54ECD7ED.30607@aklaver.com
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On 02/24/2015 11:36 AM, Gavin Flower wrote:
> On 25/02/15 04:29, Adrian Klaver wrote:
>> On 02/24/2015 06:25 AM, George Woodring wrote:
>>> -- In your original post you mentioned that access to the databases is
>>> through a Web server.
>>>
>>> -- Is there just one Web server with one time zone?
>>>
>>> We have 2 web servers that are clustered together. They are both set to
>>> Eastern since that is the timezone they are located in.
>>>
>>
>>
>> So:
>>
>> JDBC Web servers(US/East) <---> 90 database (5 different timezones)
>>
>> Therefore everything to the end user is passed through the Web servers?
>>
>> Is there a reason why the databases have different timezones?
>>
>> Seems to me less complicated to have all the databases share the UTC
>> timezone. Then you only have one offset, US/East <--> UTC.
>>
>>> iGLASS Networks
>>> www.iglass.net <http://www.iglass.net>
>>>
>>>
>>
>>
> Yes I think it sanest to have servers use GMT*, as then it is simple
> enough to convert results to whatever local time zone the client is in.
>
> I live in New Zealand, and we are offset from GMT about 12 hours (depend
> on seasonal adjustments). Have no problem getting query results using
> my local time zone automatically. - regardless of whether I query from
> the database box or another, using psql!
>
>
> Cheers,
> Gavin
>
>
> *UTC or whatever it is currently fashionable to call it! :-)

Depends on which side of the Channel you want to make happy:)

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com

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