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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4256) allow alter table to increase the maximum size of a blob and a clob.
Date Wed, 03 Jun 2009 17:36:07 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12715998#action_12715998
] 

Bryan Pendleton commented on DERBY-4256:
----------------------------------------

Hi Evan, thanks for having a look at this.

I think the first place to start is with the 'checkUserType()' method in
o.a.d.impl.sql.compile.ModifyColumnNode. Look around line 118.


> allow alter table to increase the maximum size of a blob and a clob.
> --------------------------------------------------------------------
>
>                 Key: DERBY-4256
>                 URL: https://issues.apache.org/jira/browse/DERBY-4256
>             Project: Derby
>          Issue Type: New Feature
>    Affects Versions: 10.5.1.1
>            Reporter: Mike Matrigali
>            Priority: Minor
>
> Allow new syntax that allows user to alter the maximum length of a blob and/or clob column:
> ALTER TABLE binarydata ALTER COLUMN data SET DATA TYPE blob(128M)
> The syntax should match up with the existing functionality to increase the size of varchar
fields.

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