[SPARK-24079][SQL] Update the nullability of Join output based on inferred predicates #21148
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What changes were proposed in this pull request?
This pr added code to update the nullability of
Join.outputbased on inferred predicates inInferFiltersFromConstraints. In the master, a logicalJoinnode does not respect the nullability that the optimizer ruleInferFiltersFromConstraintsmight change when inferred predicates haveIsNotNull,e.g.,
But, these
nullablevalues should be:This ticket comes from the previous discussion: #18576 (review)
How was this patch tested?
Added tests in
UpdateNullabilityInAttributeReferencesSuite.