Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/14132#discussion_r71203247
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/catalyst/LogicalPlanToSQLSuite.scala
---
@@ -755,4 +755,243 @@ class LogicalPlanToSQLSuite extends SQLBuilderTest
with SQLTestUtils {
checkHiveQl("select * from orc_t")
}
}
+
+ test("broadcast hint on single table") {
+ checkGeneratedSQL(
+ "SELECT /*+ MAPJOIN(parquet_t0) */ * FROM parquet_t0",
+ """
+ |SELECT `gen_attr` AS `id`
+ |FROM (SELECT /*+ MAPJOIN(parquet_t0) */ `gen_attr`
+ | FROM (SELECT `id` AS `gen_attr`
+ | FROM `default`.`parquet_t0`)
+ | AS gen_subquery_0)
+ | AS parquet_t0
+ |""".stripMargin)
+
+ checkGeneratedSQL(
+ "SELECT /*+ MAPJOIN(parquet_t0, parquet_t0) */ * FROM parquet_t0",
+ """
+ |SELECT `gen_attr` AS `id`
+ |FROM (SELECT /*+ MAPJOIN(parquet_t0) */ `gen_attr`
+ | FROM (SELECT `id` AS `gen_attr`
+ | FROM `default`.`parquet_t0`)
+ | AS gen_subquery_0)
+ | AS parquet_t0
+ |""".stripMargin)
+
+ checkGeneratedSQL(
+ "SELECT /*+ MAPJOIN(parquet_t0) */ * FROM parquet_t0 as a",
+ """
+ |SELECT `gen_attr` AS `id`
+ |FROM (SELECT /*+ MAPJOIN(parquet_t0) */ `gen_attr`
+ | FROM ((SELECT `id` AS `gen_attr`
+ | FROM `default`.`parquet_t0`)
+ | AS gen_subquery_0)
+ | AS a)
+ | AS a
+ """.stripMargin)
+
+ checkGeneratedSQL(
+ """
+ |SELECT /*+ MAPJOIN(parquet_t0) */ *
--- End diff --
It's beyond the scope of this PR.
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