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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