[ https://issues.apache.org/jira/browse/DERBY-4071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12676916#action_12676916 ] 

Aaron Digulla commented on DERBY-4071:
--------------------------------------

Update: The quick fix doesn't work with my more complex real table. But it might get you on the right track.

> 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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