[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.output
based on inferred predicates inInferFiltersFromConstraints
. In the master, a logicalJoin
node does not respect the nullability that the optimizer ruleInferFiltersFromConstraints
might change when inferred predicates haveIsNotNull
,e.g.,
But, these
nullable
values should be:This ticket comes from the previous discussion: #18576 (review)
How was this patch tested?
Added tests in
UpdateNullabilityInAttributeReferencesSuite
.