Re: to_timestamp alternatives

From: gkhan <drjohnpayne(at)gmail(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: to_timestamp alternatives
Date: 2015-12-31 23:05:34
Message-ID: 1451603134115-5879753.post@n5.nabble.com
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Follow-up:

My initial question was about oddly-formatted date/times. The suggested
solution of casting directly to timestamp with ::timestamp is not as
flexible as the to_timestamp function that I was trying to avoid. For
example, this fails because of the day-before-month format:

SELECT ('18.09.2015 18:01:40')::timestamp
--ERROR: date/time field value out of range

whereas this works, but results in a timestamp *with* time zone that makes
assumptions about daylight savings times:
SELECT to_timestamp('18.09.2015 18:01:40','DD.MM.YYYY HH24:MI:SS')

I ended up with this simple solution, which does what I wanted to and avoids
time zones:
SELECT (to_date('18.09.2015','DD.MM.YYYY') ||' '||'18:01:40')::timestamp

Adrian: thanks for your observation about wildlife-human interactions --
that is a useful reminder since I'll be looking at traffic patterns.

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