Обсуждение: Re: BUG #5354: Type timestamptz doesn't allow to store time zone

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Re: BUG #5354: Type timestamptz doesn't allow to store time zone

От
Vitali Malinouski
Дата:
Thank you for the response. I see your point. When I insert into field timezonetz it does convert into correct timezone
andinserts the converted value. At the same time timestamp field just drops the timezone and inserts the value.  

However, I think that confusion comes when timetz works differently. Are there any plans to make them work the same
eitherone way or another.  

Thanks,
Vitali

----- Original Message -----
From: "Kevin Grittner" <Kevin.Grittner@wicourts.gov>
To: robertmhaas@gmail.com, vitali@lumensoftware.com
Cc: pgsql-bugs@postgresql.org
Sent: Tuesday, March 2, 2010 7:35:32 AM
Subject: Re: [BUGS] BUG #5354: Type timestamptz doesn't allow to store time zone

Robert Haas wrote:
> Vitali wrote:

>> When I select from the table, the timetz has the correct time
>> zone, the timestamptz has -6 as a time zone, which is my server
>> default.
>
> I'm not sure what you think the bug is, but timestamptz definitely
> doesn't store the time zone in which the value is input. What it
> does is makes input and output relative to the then-current time
> zones rather than fixed wall-clock times.

We should probably add this to the FAQ -- the OP was expecting the
behavior specified by the standard, in which TIMESTAMP WITH TIME ZONE
includes a time zone.

-Kevin

Re: BUG #5354: Type timestamptz doesn't allow to store time zone

От
Bruce Momjian
Дата:
Vitali Malinouski wrote:
> Thank you for the response. I see your point. When I insert into
> field timezonetz it does convert into correct timezone and
> inserts the converted value. At the same time timestamp field
> just drops the timezone and inserts the value.
>
> However, I think that confusion comes when timetz works differently.
> Are there any plans to make them work the same either one way
> or another.

I think we are following the specification on that one so I don't see
how we can change it.

---------------------------------------------------------------------------

> ----- Original Message ----- From: "Kevin Grittner"
> <Kevin.Grittner@wicourts.gov> To: robertmhaas@gmail.com,
> vitali@lumensoftware.com Cc: pgsql-bugs@postgresql.org Sent:
> Tuesday, March 2, 2010 7:35:32 AM Subject: Re: [BUGS] BUG #5354:
> Type timestamptz doesn't allow to store time zone
>
> Robert Haas wrote:
> > Vitali wrote:
>
> >> When I select from the table, the timetz has the correct time
> >> zone, the timestamptz has -6 as a time zone, which is my server
> >> default.
> >
> > I'm not sure what you think the bug is, but timestamptz definitely
> > doesn't store the time zone in which the value is input. What it
> > does is makes input and output relative to the then-current time
> > zones rather than fixed wall-clock times.
>
> We should probably add this to the FAQ -- the OP was expecting
> the behavior specified by the standard, in which TIMESTAMP WITH
> TIME ZONE includes a time zone.
>
> -Kevin
>

--
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  PG East:  http://www.enterprisedb.com/community/nav-pg-east-2010.do