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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-13789) Infer additional constraints from attribute equality
Date Wed, 09 Mar 2016 23:48:40 GMT

     [ https://issues.apache.org/jira/browse/SPARK-13789?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-13789:
------------------------------------

    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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