Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/17708#discussion_r112509679
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/parser/PlanParserSuite.scala
---
@@ -537,5 +537,10 @@ class PlanParserSuite extends PlanTest {
comparePlans(
parsePlan("SELECT /*+ MAPJOIN(t) */ a from t where true group by a
order by a"),
Hint("MAPJOIN", Seq("t"),
table("t").where(Literal(true)).groupBy('a)('a)).orderBy('a.asc))
+
+ comparePlans(
+ parsePlan("SELECT a FROM (SELECT /*+ NO_COLLAPSE */ * FROM t) t1"),
+ SubqueryAlias("t1", Hint("NO_COLLAPSE", Seq.empty,
table("t").select(star())))
--- End diff --
What are you testing here that is not covered by the other cases?
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