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https://issues.apache.org/jira/browse/DERBY-3005?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Myrna van Lunteren updated DERBY-3005:
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Attachment: rrefsqljexternalname.html
DERBY-3005.diff
Attaching a patch which attempts to address this issue. I took the example from
the thread from the user's list.
Review will be appreciated.
> Document possibility to specify method signature in EXTERNAL NAME when
> creating a procedure/function
> ----------------------------------------------------------------------------------------------------
>
> Key: DERBY-3005
> URL: https://issues.apache.org/jira/browse/DERBY-3005
> Project: Derby
> Issue Type: Improvement
> Components: Documentation
> Affects Versions: 10.4.1.3
> Reporter: Kristian Waagan
> Assignee: Myrna van Lunteren
> Attachments: DERBY-3005.diff, rrefsqljexternalname.html
>
>
> In some cases it might be necessary to specify the method signature of the
> external method used as a function or procedure in Derby (using CREATE
> FUNCTION or CREATE PROCEDURE).
> This possibility is not documented in the manuals, but there is an entry in
> the FAQ (http://db.apache.org/derby/faq.html#null_args):
> Either declare the function with RETURNS NULL ON NULL INPUT or define the
> Java method signature in the external name clause. See the "Create function
> problem" derby-user mail list topic.
> The mail thread:
> http://mail-archives.apache.org/mod_mbox/db-derby-user/200602.mbox/%[email protected]%3e
> The relevant sections in the manuals should be updated to describe the
> feature.
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