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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4355) Implement CROSS JOIN
Date Sun, 06 Sep 2009 10:15:57 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4355?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Knut Anders Hatlen updated DERBY-4355:

    Issue & fix info: [Release Note Needed]

The patch has two possible compatibility issues that warrant a release note:

1) It will make CROSS a reserved keyword, so existing (non-portable) code that uses CROSS
as an identifier would need to quote it.

2) Making the join specification optional changes the SQLState for some syntax errors.

I've created a separate issue for (2), DERBY-4369, so that we get two separate release notes.

> Implement CROSS JOIN
> --------------------
>                 Key: DERBY-4355
>                 URL: https://issues.apache.org/jira/browse/DERBY-4355
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>         Environment: any
>            Reporter: Bernt M. Johnsen
>            Assignee: Knut Anders Hatlen
>         Attachments: cross.diff
> Implement the CROSS JOIN syntax
> SELECT * from t1 CROSS JOIN t2;
> as an alternative syntax to
> SELECT * FROM t1, t2; 
> This should be pretty straight forward and ease the migration of SQL code to Derby.

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