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From "Aleksei Kovura (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-4611) Add new datatypes: TIME WITH TIMEZONE and TIMESTAMP WITH TIMEZONE
Date Sat, 20 Sep 2014 09:14:34 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14141891#comment-14141891
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Aleksei Kovura commented on DERBY-4611:
---------------------------------------

I need to have a default value for a column to be current_timestamp *in UTC*.
Will this ticket provide this functionality?

> Add new datatypes: TIME WITH TIMEZONE and TIMESTAMP WITH TIMEZONE
> -----------------------------------------------------------------
>
>                 Key: DERBY-4611
>                 URL: https://issues.apache.org/jira/browse/DERBY-4611
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Rick Hillegas
>              Labels: derby_triage10_10
>
> The SQL Standard defines two timezone-stamped datatypes: TIME WITH TIMEZONE and TIMESTAMP
WITH TIMEZONE. Relevant sections in part 2 of the Standard include 4.6 (Datetimes and intervals),
6.1 (<data type>), 6.12 (<cast specification>), and 8.2 (<comparison predicate>).
> I think that we could implement these two datatypes today. Note that there is a general
cleanup of the Java datetime classes underway in JSR 310 ( https://jsr-310.dev.java net/ ),
which is supposed to be delivered in Java 7. It's possible that the next rev of JDBC will
provide better support for these datatypes. However, there is currently no JSR covering the
next JDBC increment. 
> For the moment, the existing JDBC TIME and TIMESTAMP types would have to be overloaded
to cover the new datatypes. Disambiguating the WITH TIMEZONE variants might have to be accomplished
by parsing the type names returned by ResultSetMetaData.getColumnTypeName() and DatabaseMetaData.getColumns().TYPE_NAME.
> Note also that DRDA does not provide WITH TIMEZONE variants of its TIME and TIMEZONE
types. Some creativity would be required here too.
> Users are welcome to vote for this issue in order to boost its chance of being addressed.



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