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Date: Tue, 6 Oct 2009 08:31:31 -0700 (PDT)
From: "Dag H. Wanvik (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-4399) Syntax description for
 TableViewOrFunctionExpression lack subquery option
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    [ https://issues.apache.org/jira/browse/DERBY-4399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12762664#action_12762664 ] 

Dag H. Wanvik commented on DERBY-4399:
--------------------------------------

Good catch. Actually, this applies for TableFunctionInvocation  and the undocumented "new <diagnotics VTI classname>()" syntax, too.


> Syntax description for TableViewOrFunctionExpression lack subquery option
> -------------------------------------------------------------------------
>
>                 Key: DERBY-4399
>                 URL: https://issues.apache.org/jira/browse/DERBY-4399
>             Project: Derby
>          Issue Type: Bug
>          Components: Documentation
>            Reporter: Dag H. Wanvik
>
> In the reference manual, we find these syntax descriptions (start with http://db.apache.org/derby/docs/dev/ref/rrefsqlj21583.html):
> TableExpression:
> {
>   TableViewOrFunctionExpression | JOIN operation 
> }
> TableViewOrFunctionExpression:
> { table-Name | view-Name | TableFunctionInvocation}
>     [ [ AS ] correlation-Name
>         [ (Simple-column-Name [ , Simple-column-Name]* ) ] ] ]
> I cannot find a way from the "FROM clause" to the TableSubquery production, so I think the latter should read:
> { table-Name | TableSubquery | view-Name | TableFunctionInvocation }
>     [ [ AS ] correlation-Name
>         [ (Simple-column-Name [ , Simple-column-Name]* ) ] ] ]
> Also, the "JOIN operation" is not clickable.

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