Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/5278#discussion_r27462667
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/SQLQuerySuite.scala
---
@@ -41,6 +41,30 @@ case class NestedArray1(a: NestedArray2)
*/
class SQLQuerySuite extends QueryTest {
+ test("SPARK-5371: union with null and sum") {
+ val df = Seq((1,1)).toDF("c1", "c2")
+ df.registerTempTable("table1")
+
+ val query = sql(
+ """
+ |SELECT
+ | MIN(c1),
+ | MIN(c2)
+ |FROM (
+ | SELECT
+ | SUM(c1) c1,
+ | NULL c2
+ | FROM table1
+ | UNION ALL
+ | SELECT
+ | NULL c1,
+ | SUM(c2) c2
+ | FROM table1
+ |) a
+ """.stripMargin)
+ checkAnswer(query, Row(1,1) :: Nil)
+ }
+
test("explode nested Field") {
Seq(NestedArray1(NestedArray2(Seq(1,2,3)))).toDF.registerTempTable("nestedArray")
--- End diff --
Same as above (although not part of this PR).
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