Re: efficient data reduction (and deduping)

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От Alessandro Gagliardi
Тема Re: efficient data reduction (and deduping)
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Msg-id CAAB3BB+c4+Y5E0hzsfo6fi-y1acOZFYjE+EY2cJmYZM4h0TjpQ@mail.gmail.com
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Ответ на Re: efficient data reduction (and deduping)  ("Kevin Grittner" <Kevin.Grittner@wicourts.gov>)
Ответы Re: efficient data reduction (and deduping)  ("Kevin Grittner" <Kevin.Grittner@wicourts.gov>)
Список pgsql-performance
All of our servers run in UTC specifically to avoid this sort of problem. It's kind of annoying actually, because we're a San Francisco company and so whenever I have to do daily analytics, I have to shift everything to Pacific. But in this case it's handy. Thanks for the keen eye though.

On Thu, Mar 1, 2012 at 10:51 AM, Kevin Grittner <Kevin.Grittner@wicourts.gov> wrote:
Alessandro Gagliardi <alessandro@path.com> wrote:

>   hr_timestamp timestamp without time zone,

In addition to the responses which more directly answer your
question, I feel I should point out that this will not represent a
single moment in time.  At the end of Daylight Saving Time, the
value will jump backward and you will run through a range of time
which will overlap existing entries.  There is almost never a good
reason to use TIMESTAMP WITHOUT TIME  ZONE -- TIMESTAMP WITH TIME
ZONE is required if you want the value to represent a moment in
time.

-Kevin

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