----- Original Message -----
From: "Najm Hashmi" <najm@flipr.com>
To: "pgsql" <pgsql-sql@postgresql.org>
Sent: Tuesday, June 19, 2001 4:46 PM
Subject: [SQL] Extracting date from epoche
> Hi I have some data that is supose to be a date but in ecpoche
> format. How can I reonvert it to data format.
> Thanks in advance for help.
> Regards,
Something like:
select '1970-01-01 00:00:00+00'::timestamp + (3600::text || ' seconds')::interval;
should work (3600 is your offset, the 1970 assumes std unix epoch start).
Keep an eye on timezone issues.
Example:
richardh=> select 'epoch'::date + (3600::text || ' seconds')::interval; ?column?
------------------------1970-01-01 01:00:00+01
(1 row)
richardh=> select '1970-01-01 00:00:00+00'::timestamp + (3600::text || '
seconds')::interval; ?column?
------------------------1970-01-01 02:00:00+01
(1 row)
The difference is because I am currently in timezone +01 and 'epoch' seems
to assume my timezone. In the second example I explicitly set the timezone.
Tom - I thought 'epoch'::timestamp should work too - good reason, or just
One Of Those Things (tm)?
- Richard Huxton
