Sameer Agarwal created SPARK-13759:
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Summary: Add IsNotNull constraints for expressions with an
inequality
Key: SPARK-13759
URL: https://issues.apache.org/jira/browse/SPARK-13759
Project: Spark
Issue Type: Sub-task
Reporter: Sameer Agarwal
Priority: Minor
Support for adding `IsNotNull` constraints from expressions with an inequality.
More specifically, if an operator has a condition on `a !== b`, we know that
both `a` and `b` in the operator output can no longer be null.
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