Re: timestamp without timezone to have timezone

[Melvin Davidson <melvin6925@xxxxxxxxx>]

On Sun, Nov 6, 2016 at 9:11 AM, Benjamin Adams <benjamindadams@xxxxxxxxx> wrote:

I have a server that has a column timestamp without timezone.

Is the time still saved?

if I select column with timestamp it will show server timestamp with timezone.

But If I move the data from EST to Central will the timestamp with timezone be correct?

Or will it just not make the adjustment?

Thanks

Ben

>But If I move the data from EST to Central will the timestamp with timezone be correct?

The correct way to do that is to use the  AT TIME ZONE function.

https://www.postgresql.org/docs/9.4/static/functions-datetime.html#FUNCTIONS-DATETIME-ZONECONVERT

eg:

postgres=> SELECT TIMESTAMP '2001-02-16 20:38:40' AT TIME ZONE 'EST' as Eastern,
postgres->        TIMESTAMP '2001-02-16 20:38:40' AT TIME ZONE 'CST' as Central,
postgres->        TIMESTAMP '2001-02-16 20:38:40' AT TIME ZONE 'MST' as Mountain,
postgres->        TIMESTAMP '2001-02-16 20:38:40' AT TIME ZONE 'PST' as Pacific;
        eastern         |        central         |        mountain        |        pacific
------------------------+------------------------+------------------------+------------------------
 2001-02-16 20:38:40-05 | 2001-02-16 21:38:40-05 | 2001-02-16 22:38:40-05 | 2001-02-16 23:38:40-05
(1 row)

--

Melvin Davidson
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