Re: Conversion of a column from Integer format type to 'timestamp with time zone'

From: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
To: Raj kumar <rajkumar820999(at)gmail(dot)com>
Cc: Pgsql-admin <pgsql-admin(at)lists(dot)postgresql(dot)org>
Subject: Re: Conversion of a column from Integer format type to 'timestamp with time zone'
Date: 2023-01-26 20:02:00
Message-ID: CAKFQuwZYWsBb49OZsS=H-SDhCu2_tSFiypiX7mfbQTyAZMobWg@mail.gmail.com
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On Thu, Jan 26, 2023 at 12:45 PM Raj kumar <rajkumar820999(at)gmail(dot)com> wrote:

> Hi, there is a column 'created' in the 'customers' table which is actually
> supposed to be a 'timestamp with time zone' column but stored in this
> Integer format. How do I typecast this to 'timestamp with time zone' format?
>
> select created from customers limit 3;
> created
> ---------------
> 1521521848681
> 1508995056368
> 1521559994299
> (3 rows)
>
>
We have no way of knowing what the corresponding point-in-time a 0 in that
column represents. Or, for that matter, what a 1 means.

David J.

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