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https://issues.apache.org/jira/browse/SPARK-13789?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-13789:
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Assignee: Apache Spark
> Infer additional constraints from attribute equality
> ----------------------------------------------------
>
> Key: SPARK-13789
> URL: https://issues.apache.org/jira/browse/SPARK-13789
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Sameer Agarwal
> Assignee: Apache Spark
>
> We should be able to infer additional set of data constraints based on
> attribute equality. For e.g., if an operator has constraints of the form (`a
> = 5`, `a = b`), we should be able to infer an additional constraint of the
> form `b = 5`
> cc [~nongli]
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