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https://issues.apache.org/jira/browse/HIVE-17054?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HIVE-17054 started by Jesus Camacho Rodriguez.
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> Expose SQL database constraints to Calcite
> ------------------------------------------
>
> Key: HIVE-17054
> URL: https://issues.apache.org/jira/browse/HIVE-17054
> Project: Hive
> Issue Type: Improvement
> Components: Logical Optimizer
> Affects Versions: 3.0.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Fix For: 3.0.0
>
>
> Hive already has support to declare multiple SQL constraints (PRIMARY KEY,
> FOREIGN KEY, UNIQUE, and NOT NULL). Although these constraints cannot be
> currently enforced on the data, they can be made available to the optimizer
> by using the 'RELY' keyword.
> Currently, even when they are declared with the RELY keyword, they are not
> exposed to Calcite.
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