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https://issues.apache.org/jira/browse/HIVE-16605?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vineet Garg updated HIVE-16605:
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Attachment: HIVE-16605.4.patch
> Enforce NOT NULL constraints
> ----------------------------
>
> Key: HIVE-16605
> URL: https://issues.apache.org/jira/browse/HIVE-16605
> Project: Hive
> Issue Type: New Feature
> Affects Versions: 3.0.0
> Reporter: Carter Shanklin
> Assignee: Vineet Garg
> Priority: Major
> Attachments: HIVE-16605.1.patch, HIVE-16605.2.patch,
> HIVE-16605.3.patch, HIVE-16605.4.patch
>
>
> Since NOT NULL is so common it would be great to have tables start to enforce
> that.
> [~ekoifman] described a possible approach in HIVE-16575:
> {quote}
> One way to enforce not null constraint is to have the optimizer add
> enforce_not_null UDF which throws if it sees a NULL, otherwise it's pass
> through.
> So if 'b' has not null constraint,
> Insert into T select a,b,c... would become
> Insert into T select a, enforce_not_null(b), c.....
> This would work for any table type.
> {quote}
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