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From "Kim Haase (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-3005) Document possibility to specify method signature in EXTERNAL NAME when creating a procedure/function
Date Wed, 10 Sep 2014 19:53:33 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14128995#comment-14128995
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Kim Haase commented on DERBY-3005:
----------------------------------

This is the same issue as the now closed DERBY-2271.

> 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
>
> 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/%3c4404E53D.1050605@apache.org%3e
> The relevant sections in the manuals should be updated to describe the feature.



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