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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-3005) Document possibility to specify method signature in EXTERNAL NAME when creating a procedure/function
Date Tue, 14 Aug 2007 12:31:31 GMT
Document possibility to specify method signature in EXTERNAL NAME when creating a procedure/function
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                 Key: DERBY-3005
                 URL: https://issues.apache.org/jira/browse/DERBY-3005
             Project: Derby
          Issue Type: Improvement
          Components: Documentation
    Affects Versions: 10.4.0.0
            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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