Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/10960#discussion_r51294182
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/AggregationQuerySuite.scala
---
@@ -790,7 +790,7 @@ abstract class AggregationQuerySuite extends QueryTest
with SQLTestUtils with Te
"""
|SELECT corr(b, c) FROM covar_tab WHERE a = 3
""".stripMargin),
- Row(null) :: Nil)
+ Row(Double.NaN) :: Nil)
--- End diff --
This is changed to match the behavior as stddev_samp and others.
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