Message-ID: <4253FB61.2050502@numerixtechnology.de>
Date: Wed, 06 Apr 2005 16:08:17 +0100
From: T E Schmitz <mailreg@numerixtechnology.de>
Reply-To: mailreg@numerixtechnology.de
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To: pgsql-sql@postgresql.org
Subject: TIMESTAMP / summertime
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Hello,

I *detest* British summertime. This year it took me two days to adjust.
Now I am realizing that my program might need some adjusting too:

Joking aside, I need some advice regarding TIMESTAMP colums and I can't 
quite get my head round this at the moment:


I created a table TRANSAKTION with a TIMESTAMP column without qualifying 
"with/without time zone".
My understanding is that this is equivalent to "TIMESTAMP without time 
zone"? (I am using Postgres 7.4.)

I am accessing the database via a Java client program. The DB access 
code is generated by an O/R mapper. Client and server are in the same 
timezone.

One of the things I need to do select records from TRANSAKTION, which 
fall within a certain time period, specified in days: e.g. 1st Mar 2005 
to 31st Mar 2005. In other words, I want to grab TRANSAKTIONs >= 1 Mar 
00:00 and < 1 Apr 00:00.

The generated WHERE clause is:

WHERE (TRANSAKTION.THE_TIME>={ts '2005-03-01 00:00:00.0'} AND 
TRANSAKTION.THE_TIME<{ts '2005-04-01 01:00:00.0'})

Should it be '2005-04-01 00:00:00.0' or 2005-04-01 01:00:00.0' ??


Also, in autumn, when the clocks go back, I need to be able to 
distinguish between the two double hours.

Sorry, if I sound confused. Unfortuantely, this is what I am ;-)

-- 


Regards/Gruß,

Tarlika Elisabeth Schmitz