Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17650#discussion_r111937272
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/BooleanSimplificationSuite.scala
---
@@ -160,4 +166,12 @@ class BooleanSimplificationSuite extends PlanTest with
PredicateHelper {
testRelation.where('a > 2 || ('b > 3 && 'b < 5)))
comparePlans(actual, expected)
}
+
+ test("Complementation Laws") {
+ checkCondition('a && !'a, LocalRelation(testRelation.output,
Seq.empty))
--- End diff --
ah i see. Then we need to create a new test relation with data, and test if
the result is a empty relation here
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