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Posted to issues@spark.apache.org by "Sameer Agarwal (JIRA)" <ji...@apache.org> on 2016/03/10 00:45:41 UTC

[jira] [Created] (SPARK-13789) Infer additional constraints from attribute equality

Sameer Agarwal created SPARK-13789:
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             Summary: 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


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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