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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DERBY-6263) Make the Visitor support in CursorNodes support ORDER BY lists, FETCH, and OFFSET clauses
Date Fri, 14 Jun 2013 13:47:23 GMT

     [ https://issues.apache.org/jira/browse/DERBY-6263?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rick Hillegas updated DERBY-6263:
---------------------------------

    Attachment: derby-6263-01-aa-visit-ignored-clauses.diff

Attaching derby-6263-01-aa-visit-ignored-clauses.diff. This patch makes the Visitor logic
inspect ORDER BY, FETCH, and OFFSET clauses. I am running tests now.

Touches the following file:

M       java/engine/org/apache/derby/impl/sql/compile/CursorNode.java

                
> Make the Visitor support in CursorNodes support ORDER BY lists, FETCH, and OFFSET clauses
> -----------------------------------------------------------------------------------------
>
>                 Key: DERBY-6263
>                 URL: https://issues.apache.org/jira/browse/DERBY-6263
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.11.0.0
>            Reporter: Rick Hillegas
>         Attachments: derby-6263-01-aa-visit-ignored-clauses.diff
>
>
> If you call treePrint() on a CursorNode, you will see information on ORDER BY, FETCH,
and OFFSET clauses. However, these clauses are not visited by CursorNode.acceptChildren().
This looks like an omission. This defect was brought to our attention by this email thread:
http://apache-database.10148.n7.nabble.com/Using-ASTParser-and-TreeWalker-for-parsing-SQL-query-td131219.html.
You can see the difference in treePrint() and acceptChildren() behavior by running the following
query through the ASTParser and TreePrinter tools attached to DERBY-3946:
>     select tablename from sys.systables where 1=2 order by tablename;

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