Sameer Agarwal 19f4ac6dc7 [SPARK-13759][SQL] Add IsNotNull constraints for expressions with an inequality ... ## What changes were proposed in this pull request? This PR adds support for inferring `IsNotNull` constraints from expressions with an `!==`. 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. ## How was this patch tested? 1. Modified a test in `ConstraintPropagationSuite` to test for expressions with an inequality. 2. Added a test in `NullFilteringSuite` for making sure an Inner join with a "non-equal" condition appropriately filters out null from their input. cc nongli Author: Sameer Agarwal <sameer@databricks.com> Closes #11594 from sameeragarwal/isnotequal-constraints.		2016-03-10 12:16:46 -08:00
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main	[SPARK-13766][SQL] Consistent file extensions for files written by internal data sources	2016-03-09 19:12:46 -08:00
test	[SPARK-13759][SQL] Add IsNotNull constraints for expressions with an inequality	2016-03-10 12:16:46 -08:00