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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-5235) Remove the artificial limit on the length of VARCHAR values, allowing them to be java.lang.Integer.MAX_VALUE long
Date Tue, 17 May 2011 14:44:47 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13034795#comment-13034795
] 

Kathey Marsden commented on DERBY-5235:
---------------------------------------

A couple of random questions/comments  on this.  
- Does the sql spec say anything about limits on these types?
- What would be the soft upgrade behavior?
- I think there may be more complications regarding implementing this for client/server than
embedded.   It may be less onerous now than at the time I looked at it years ago, because
at the time I was working with the JCC client and strict adherence to DRDA. I think it will
be important to keep the limits the same for both client and server.
-  How would older clients behave with larger columns?





> Remove the artificial limit on the length of VARCHAR values, allowing them to be java.lang.Integer.MAX_VALUE
long
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-5235
>                 URL: https://issues.apache.org/jira/browse/DERBY-5235
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 10.9.0.0
>            Reporter: Rick Hillegas
>
> The original Cloudscape limit for the length of VARCHAR values was java.lang.Integer.MAX_VALUE.
That is the limit in Cloudscape 5.1. Nothing in Derby should break if we restore the original
limit. The current limit is an artificial bound introduced to make Derby agree with DB2. 32672
is the upper bound on the length of a DB2 VARCHAR: http://publib.boulder.ibm.com/infocenter/db2luw/v8/index.jsp?topic=/com.ibm.db2.udb.doc/admin/r0001029.htm

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