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From "Mamta A. Satoor (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DERBY-342) ERROR 42818: Comparisons between 'LONG VARCHAR' and 'CHAR' are not supported
Date Thu, 18 Jul 2013 17:40:51 GMT

     [ https://issues.apache.org/jira/browse/DERBY-342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mamta A. Satoor updated DERBY-342:
----------------------------------

    Urgency: Normal
     Labels: derby_triage10_11  (was: )
    
> ERROR 42818: Comparisons between 'LONG VARCHAR' and 'CHAR' are not supported
> ----------------------------------------------------------------------------
>
>                 Key: DERBY-342
>                 URL: https://issues.apache.org/jira/browse/DERBY-342
>             Project: Derby
>          Issue Type: Improvement
>          Components: JDBC, Tools
>    Affects Versions: 10.0.2.1
>         Environment: Windows XP Professional, Service Pack 2; Dell Latitude D600; 1.5GB
RAM
>            Reporter: Thomas J. Taylor
>              Labels: derby_triage10_11
>
> Trying to run the same SQL query through JDBC-Derby and IJ results in the same error:
> ERROR 42818: Comparisons between 'LONG VARCHAR' and 'CHAR' are not supported.
> The same Java code/query works with MySQL 4.1 (Connector/J) and MS Access 2002 (JDBC-ODBC)
> Table Definition:
>   CREATE TABLE itemdata (valuetext LONG VARCHAR);
> SQL Statement
>   ij>SELECT * FROM itemdata WHERE valuetext = 'asdf';
>   ERROR 42818: Comparisons between 'LONG VARCHAR' and 'CHAR' are not supported.
> I have tried to use the 'cast' function to perform a LONG VARCHAR comparison:
>   ij> select * from itemdata where valuetext = cast('asdf' as long varchar);
>   ERROR 42818: Comparisons between 'LONG VARCHAR' and 'LONG VARCHAR' are not supported.
> The only way I've been able to get ANY result is the following:
>   ij> select * from itemdata where cast(valuetext as char) = 'asdf';
>   VALUETEXT
>   
>   --------------------------------------------------------------------------------------------------------------------------------
>   ERROR 22001: A truncation error was encountered trying to shrink CHAR 'asdf' to length
1.
> If I try to cast to VARCHAR, I get a syntax error:
>   ij> select * from itemdata where cast(valuetext as varchar) = 'asdf';
>   ERROR 42X01: Syntax error: Encountered ")" at line 1, column 63.
> I also have this problem if I change itemdata.valuetext to CLOB.

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