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From "Jeremy Boynes (JIRA)" <derby-...@db.apache.org>
Subject [jira] Updated: (DERBY-158) PRIMARY KEY does not imply NOT NULL
Date Sat, 05 Mar 2005 04:45:47 GMT
     [ http://issues.apache.org/jira/browse/DERBY-158?page=history ]

Jeremy Boynes updated DERBY-158:
--------------------------------

    Attachment: derby-158-1.patch

Patch to TableElementList that implicitly adds NOT NULL to columns included in a PRIMARY KEY
constraint contained in a CREATE TABLE statement. However, it does not allow UNIQUE to be
added in CREATE TABLE if any of the columns are NULL; similarly UNIQUE or PRIMARY KEY constraints
cannot be added with ALTER TABLE if any of the columns are nullable.

I am posting this first for review as a couple of tests still need to be updated.

> PRIMARY KEY does not imply NOT NULL
> -----------------------------------
>
>          Key: DERBY-158
>          URL: http://issues.apache.org/jira/browse/DERBY-158
>      Project: Derby
>         Type: Bug
>   Components: SQL
>     Reporter: Bernt M. Johnsen
>     Assignee: Jeremy Boynes
>     Priority: Minor
>  Attachments: derby-158-1.patch
>
> PRIMARY KEY does not imply NOT NULL. Derby issues error message:
> ij> create table tab (i integer primary key);
> ERROR 42831: 'I' cannot be a column of a primary key or unique key because it can contain
null values.
> This is neither compliant with SQL-92 nor with SQL-99 (Feature E141-08, I think).

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