Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/10620#discussion_r49259620
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/SQLQuerySuite.scala
---
@@ -936,6 +936,35 @@ class SQLQuerySuite extends QueryTest with
SQLTestUtils with TestHiveSingleton {
assert(e.getMessage.contains("Distinct window functions are not
supported"))
}
+ test("window function: better support of parentheses") {
+ val data = Seq(
+ WindowData(1, "a", 5),
+ WindowData(2, "a", 6),
+ WindowData(3, "b", 7),
+ WindowData(4, "b", 8),
+ WindowData(5, "c", 9),
+ WindowData(6, "c", 10)
+ )
+ sparkContext.parallelize(data).toDF().registerTempTable("windowData")
+
+ checkAnswer(
+ sql(
+ """
+ |select month, area, product,
+ |sum(product + 1) over (partition by ((1) + (1 - 1) -
+ |(2 * 1 / 2) + (1) + product - (product)) order by 2)
--- End diff --
Putting this query into the test is because we want to make sure some
corner cases passed. E.g., (expression) op (expression op expression). I will
try simpler ones.
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