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https://issues.apache.org/jira/browse/DERBY-2238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14128505#comment-14128505
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Kim Haase commented on DERBY-2238:
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This is a valid issue, I think -- the example in the manual doesn't even seem
to have a subquery, let alone a scalar one. It should be dropped and if
possible replaced with a valid scalarSubquery. Please let me know if I'm
mistaken here.
> 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
> Labels: derby_triage10_11
>
> 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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