Re: Assigning a timestamp without timezone to a timestamp

Hi Andrew,

Finally got around to trying to implement your solution.

It works fine with fixed offset timezones, but when I try it with EST5EDT
I get the following:
protocal2=> select start_datetime,cast(cast(cast(start_datetime as
timestamp(0) without time zone) as varchar)||' '||B.timezone_ch as
timestamp(0) with time zone) from reservation A, location B where appt_key
= 7 and locn_key = 102 ;
ERROR: invalid input syntax for type timestamp with time zone: "2006-07-13
09:20:00 EST5EDT"

when I change timezone_ch to EST it works like a charm:
protocal2=> select start_datetime,cast(cast(cast(start_datetime as
timestamp(0) without time zone) as varchar)||' '||B.timezone_ch as
timestamp(0) with time zone) from reservation A, location B where appt_key
= 7 and locn_key = 102 ;
start_datetime | timestamptz
------------------------+------------------------
2006-07-13 09:20:00-04 | 2006-07-13 10:20:00-04
(1 row)

Any thoughts?

On Thu, Oct 05, 2006 at 01:06:00PM -0700, chrisj wrote:
> If only all time zones were fixed offset timezones life would be so much
> simpler.

Indeed.

> Unfortunately the main area of deployment of my app will beToronto which
> is
> on EDT which is not a fixed offsets timezone. I hope/assume your solution
> works with "EDT" instead of "-3", I will test it soon.

Should do, although you'll need more than EDT. EDT is also fixed:
it's UTC-4. EST5EDT isn't, though, so you could use that (you'd need
to improve your schema, though, because you had char(3) there, and
not all time zones are 3 characters long). But to answer your
question, yes, it works. I just tried it.

A

--
Andrew Sullivan | ajs(at)crankycanuck(dot)ca
Information security isn't a technological problem. It's an economics
problem.
--Bruce Schneier

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