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From "Sylvain Leroux (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4550) Using ij to copy data from one DB to an other
Date Tue, 16 Feb 2010 13:23:27 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4550?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sylvain Leroux updated DERBY-4550:
----------------------------------

    Attachment: DERBY-4550.sql
                DERBY-4550.diff

Here is a first attempt to solve this issue.

Basically, I add an optional "ON" clause to the PREPARE statement, allowing to prepare the
statement on an alternate connection, instead of the current one. I don't know if this is
the most elegant way of doing, but it appears to work.

The file DERBY-4550.sql contains a sample script demonstrating that.

----
As Rick Hillegas suggested it on the mailing list, I will take a look at PreparedStatement.addBatch()
and Statement.executeBatch() for an alternative option.

----
I focused mostly on prepared statements as it was my first idea. But cursors might benefit
of the same improvement.

> Using ij to copy data from one DB to an other
> ---------------------------------------------
>
>                 Key: DERBY-4550
>                 URL: https://issues.apache.org/jira/browse/DERBY-4550
>             Project: Derby
>          Issue Type: Improvement
>          Components: Tools
>            Reporter: Sylvain Leroux
>            Assignee: Sylvain Leroux
>            Priority: Minor
>         Attachments: DERBY-4550.diff, DERBY-4550.sql
>
>
> It is possible to have open connections to several databases while running ij, but it
is not currently possible to copy data from one DB to an other one.
> Not only such a feature would allow to copy data between Derby databases. But, ij being
mostly DB agnostic, if will ease import/export from any JDBC compliant data source.
> See http://old.nabble.com/Using-IJ-to-copy-data-from-one-DB-to-an-other-one-td27598138.html

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