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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4071) AssertFailure when selecting rows from a table with CHARACTER and VARCHAR columns
Date Mon, 02 Mar 2009 14:23:56 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12677993#action_12677993
] 

Knut Anders Hatlen commented on DERBY-4071:
-------------------------------------------

One possible "quick fix" may be to use the production jar files instead of the debug jar files,
as the production jars don't have the assertions.

I don't know if the assert failure exposes a bug or if it's just the assert that is too strict,
but this comment indicates that the one who added the assert wasn't completely convinced that
it was checking the right thing:

	/**
	Check that the columns in the row agree with the columns
	in the template, both in number and in type.
	<p>
	XXX (nat) Currently checks that the classes implementing
	each column are the same -- is this right?
	**/

> AssertFailure when selecting rows from a table with CHARACTER and VARCHAR columns
> ---------------------------------------------------------------------------------
>
>                 Key: DERBY-4071
>                 URL: https://issues.apache.org/jira/browse/DERBY-4071
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.4.2.0
>            Reporter: Aaron Digulla
>         Attachments: DerbyTest.java
>
>
> When running a complex query on this table:
> [code]
> Create table DEMO.TEST (
>     CHR                            CHARACTER(26)                   ,
>     VCHR                           VARCHAR(25)                     )
> [code]
> then I get this exception:
> AssertFailure: ASSERT FAILED col1.getClass() (class ...SQLChar) expected to be the same
as col2.getClass() (class ....SQLVarchar)' was thrown while evaluating an expression.

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