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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4355) Implement CROSS JOIN
Date Thu, 03 Sep 2009 23:12:57 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12751213#action_12751213
] 

Dag H. Wanvik commented on DERBY-4355:
--------------------------------------

> This will certainly cause failures in the regression tests because
>  the canons expect the EOF message for negative join tests, but it
>  looks like an improvement to me.

+1

A newbie might wonder why the message says INNER when that keyword was
not used, perhaps (your example). But that info is lost in the parser, so it's ok.



> 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
>         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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