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From "Kim Haase (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-2238) Example of ScalarSubquery in Derby Reference Manual is not ScalarSubquery
Date Tue, 13 Jan 2015 14:24:35 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14275237#comment-14275237
] 

Kim Haase commented on DERBY-2238:
----------------------------------

Thanks -- this is a good, simple way of fixing the problem. A VALUES expression is equivalent
to a query -- this is stated in the documentation of both the VALUES expression and a query
-- so it's a perfectly valid example. Looks like the commit has already shown up in the latest
alpha manuals, so the issue can be both resolved and closed.

> Example of ScalarSubquery in Derby Reference Manual is not ScalarSubquery 
> --------------------------------------------------------------------------
>
>                 Key: DERBY-2238
>                 URL: https://issues.apache.org/jira/browse/DERBY-2238
>             Project: Derby
>          Issue Type: Bug
>          Components: Documentation
>    Affects Versions: 10.2.2.0
>         Environment: http://db.apache.org/derby/docs/dev/ref/rrefscalarsubquery.html
>            Reporter: Tomohito Nakayama
>            Assignee: Myrna van Lunteren
>              Labels: derby_triage10_11
>         Attachments: DERBY-2238.diff, DERBY-2238_2.diff, rrefscalarsubquery.html, rrefscalarsubquery.html
>
>
> In the page, I found next example.
> -- Introduce a way of "generating" new data values,
> -- using a query which selects from a VALUES clause (which is an
> -- alternate form of a fullselect).
> -- This query shows how a table can be derived called "X" having
> -- 2 columns "R1" and "R2" and 1 row of data.
> SELECT R1,R2
> FROM (VALUES('GROUP 1','GROUP 2')) AS X(R1,R2)
> I think this is not ScalarSubquery because the result have two columns.



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