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https://issues.apache.org/jira/browse/DERBY-3969?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rick Hillegas closed DERBY-3969.
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> NPE if you declare a constraint on a generated column and omit the datatype
> ---------------------------------------------------------------------------
>
> Key: DERBY-3969
> URL: https://issues.apache.org/jira/browse/DERBY-3969
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.5.1.1
> Reporter: Rick Hillegas
> Assignee: Rick Hillegas
> Fix For: 10.5.1.1
>
> Attachments: derby-3969-01-aa-constraintsNoDatatype.diff
>
>
> The following script shows the problem for CHECK constraints. Other NPEs
> occur for PRIMARY, FOREIGN KEY, and NOT NULL constraints.
> drop table t_ccnd_1;
> -- raises a null pointer exception
> create table t_ccnd_1( a int, b generated always as ( -a ) check ( b < 0 ) );
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