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From "Bernt M. Johnsen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2235) Server doesnt support timestamps with timezone
Date Mon, 17 Sep 2007 12:41:56 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12528044
] 

Bernt M. Johnsen commented on DERBY-2235:
-----------------------------------------

Brorwsing through the SQL2003 standard, I find that Dan is right. A timestamp without timezone
has no associated timezone, not even implicit. So '2000-01-01 12:00:00'  in LA is '2000-01-01
12:00:00'  in NY since no timezone is associated with the datatype. Then it is the application's
problem to interpret the values. The standard *does* say, however, that the current SQL-session's
timezone is applied if timezone is required (e.g when cast to TIMESTAMP WITH TIMEZONE). Quote
from the standard:

If <time zone interval> is not specified, then no assumption is made about time zone
displacement. However, should a time zone
displacement be required during subsequent processing, the current default time zone displacement
of the SQL-session will be
applied at that time.

> Server doesnt support timestamps with timezone
> ----------------------------------------------
>
>                 Key: DERBY-2235
>                 URL: https://issues.apache.org/jira/browse/DERBY-2235
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 10.2.2.0
>            Reporter: Ken Johanson
>            Priority: Minor
>
> DML with datetime literals having timzone offset data (ISO-8601):
> update tbl set dt1 = '2007-01-03 04:13:43.006 -0800'
> Causes:
> SQLException: The syntax of the string representation of a datetime value is incorrect.
> Error: -1 SQLSTATE: 22007
> I believe that even if the storage does not (does it?) support timezone storage, the
input of a TZ could be normalized (offset applied) to the default TZ.

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