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https://issues.apache.org/jira/browse/DERBY-3341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12577512#action_12577512
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Rick Hillegas commented on DERBY-3341:
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Committed derby-3341-01-da-coerceWithTests.diff at subversion revision 636004.
The old-style regression tests ran cleanly for me last Friday except for a
known instability in the stress multi tests. The junit tests hung, however, at
the end in the replication tests. Those replication tests have been disabled
and the junit tests now run cleanly for me.
> TABLE FUNCTION returning CHAR values does not return a correct value if the
> Java ResultSet class returns a value less than the length of the defined CHAR.
> ----------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-3341
> URL: https://issues.apache.org/jira/browse/DERBY-3341
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Reporter: Daniel John Debrunner
> Fix For: 10.4.0.0
>
> Attachments: derby-3341-01-coerce.diff,
> derby-3341-01-da-coerceWithTests.diff, derby-3341-02-aa-refGuide.diff,
> derby_3341_test.txt, rrefcreatefunctionstatement.html
>
>
> Defining a column in the returned type as CHAR(10) requires that the returned
> value be of length 10 characters.
> Defining a table function with a return type of:
> returns TABLE column0 char( 10 ), column1 char( 10 ))
> seems to just return whatever the Java ResultSet implementation handed it.
> My guess this is true for all variable length types, no casting of the value
> occurs when it is returned to the SQL domain.
> Java single value functions and procedure out parameters do perform any
> required casting to ensure the value is of the declared type.
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