Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/11195#discussion_r52838020
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/LogicalPlanToSQLSuite.scala
---
@@ -105,6 +105,18 @@ class LogicalPlanToSQLSuite extends SQLBuilderTest
with SQLTestUtils {
checkHiveQl("SELECT id FROM t0 UNION ALL SELECT CAST(id AS INT) AS id
FROM t0")
}
+ test("union distinct") {
+ checkHiveQl("SELECT * FROM t0 UNION SELECT * FROM t0")
--- End diff --
does this work if the query looks like
select * from a union (select * from b limit 10)?
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