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Posted to derby-dev@db.apache.org by "Dag H. Wanvik (JIRA)" <ji...@apache.org> on 2014/07/02 18:59:25 UTC

[jira] [Commented] (DERBY-6644) Support standard syntax for altering column nullability

    [ https://issues.apache.org/jira/browse/DERBY-6644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14050323#comment-14050323 ] 

Dag H. Wanvik commented on DERBY-6644:
--------------------------------------

+1 to this change. Thanks for this, Knut!


> Support standard syntax for altering column nullability
> -------------------------------------------------------
>
>                 Key: DERBY-6644
>                 URL: https://issues.apache.org/jira/browse/DERBY-6644
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 10.11.0.0
>            Reporter: Knut Anders Hatlen
>            Assignee: Knut Anders Hatlen
>            Priority: Minor
>         Attachments: d6644-1a.diff
>
>
> Derby supports altering the nullability of a column via an ALTER TABLE statement, but the supported syntax is different from what the SQL:2011 standard defines. We should add support for the standard syntax as well.
> The standard syntax is
>   ALTER TABLE t ALTER COLUMN c SET NOT NULL
>   ALTER TABLE t ALTER COLUMN c DROP NOT NULL



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