Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/23152#discussion_r237776897
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/SQLQuerySuite.scala
---
@@ -2276,4 +2276,16 @@ class SQLQuerySuite extends QueryTest with
SQLTestUtils with TestHiveSingleton {
}
}
+
+ test("SPARK-26181 hasMinMaxStats method of ColumnStatsMap is not
correct") {
+ withSQLConf(SQLConf.CBO_ENABLED.key -> "true") {
+ withTable("all_null") {
+ sql("create table all_null (attrInt int)")
+ sql("insert into all_null values (null)")
+ sql("analyze table all_null compute statistics for columns
attrInt")
+ checkAnswer(sql("select * from all_null where attrInt < 1"), Nil)
--- End diff --
This will be triggered by `sql("select * from all_null where attrInt <
1").queryExecution.stringWithStats`.
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