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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-3341) 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.
Date Fri, 07 Mar 2008 20:53:48 GMT

     [ https://issues.apache.org/jira/browse/DERBY-3341?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rick Hillegas updated DERBY-3341:
---------------------------------

    Attachment: rrefcreatefunctionstatement.html
                derby-3341-02-aa-refGuide.diff

Attaching derby-3341-02-aa-refGuide.diff and the corresponding html output. This is a change
to the CREATE FUNCTION documentation in the Reference Guide. This adds a paragraph describing
how values are coerced as they come out of user-coded ResultSets. Touches the following file:

M      src/ref/rrefcreatefunctionstatement.dita


> 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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