Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/22857#discussion_r228779505
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/DataFrameSuite.scala
---
@@ -2578,4 +2578,45 @@ class DataFrameSuite extends QueryTest with
SharedSQLContext {
Row ("abc", 1))
}
}
+
+ test("SPARK-25860: Replace Literal(null, _) with FalseLiteral whenever
possible") {
+
+ def checkPlanIsEmptyLocalScan(df: DataFrame): Unit =
df.queryExecution.executedPlan match {
--- End diff --
this assumes we run `ConvertToLocalRelation`, let's use `withSQLConf` to
make sure this rule is on.
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