Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/10660#discussion_r49164281
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveQuerySuite.scala
---
@@ -803,6 +803,21 @@ class HiveQuerySuite extends HiveComparisonTest with
BeforeAndAfter {
assertResult(Array(Row(1))) {
sql("select 1 as a intersect select 1 as a").collect()
}
+ assertResult(Array(Row(1))) {
+ sql("(select 1 as a) intersect (select 1 as a)").collect()
--- End diff --
Is it possible to test fix by adding these to the parser unit test without
running the queries?
As we develop more and more Spark features, I'd like to encourage doing
actual unit tests or integration tests that run the minimal required code.
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