From: | Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: Trigger to convert UNIX time to timestamp without time zone. |
Date: | 2014-06-06 13:35:33 |
Message-ID: | 5391C3A5.1030407@aklaver.com |
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Lists: | pgsql-general |
On 06/06/2014 06:19 AM, Alberto Olivares wrote:
> Hello,
>
> I want to insert data into a column "timestamp without time zone" data
> type. The problem is I am receiving the data in UNIX time.
>
> How can I create a trigger to transform the time from UNIX to timestamp
> without time zone every time a new record is inserted into my database?
to_timesstamp will take the epoch, which I assume is what you are
talking about, and turn it into a timestamp with time zone. Don't worry
about the timezone.
test=> select to_timestamp(extract(epoch from now()));
to_timestamp
-------------------------------
2014-06-06 06:27:20.484509-07
(1 row)
test=> \d timestamp_test
Table "public.timestamp_test"
Column | Type | Modifiers
--------+-----------------------------+-----------
id | integer |
ts | timestamp without time zone |
ts_z | timestamp with time zone |
Inserting a timestamp with time zone into a field that is timestamp
without timezone will strip the timezone automatically.
test=> insert into timestamp_test values (1, to_timestamp(extract(epoch
from now())), to_timestamp(extract(epoch from now())));
INSERT 0 1
test=> select * from timestamp_test ;
id | ts | ts_z
----+----------------------------+-------------------------------
1 | 2014-06-06 06:30:58.080158 | 2014-06-06 06:30:58.080158-07
(1 row)
So you just need to wrap the above in a function and call it from your
trigger.
>
> Thank you in advance.
>
> Regards,
> Alberto.
>
>
> *Alberto Olivares Colas
> *Technical Consultant
> Snowflake Software
--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com
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