Github user dongjoon-hyun commented on a diff in the pull request: https://github.com/apache/spark/pull/14132#discussion_r71464346 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/catalyst/SQLBuilder.scala --- @@ -356,8 +372,14 @@ class SQLBuilder(logicalPlan: LogicalPlan) extends Logging { } } + val broadcastHint = project match { + case p @ Project(projectList, Hint("BROADCAST", tables, child)) => + if (tables.nonEmpty) s"/*+ MAPJOIN(${tables.mkString(", ")}) */" else "" + case _ => "" + } build( "SELECT", + broadcastHint, --- End diff -- "SELECT" occurs in the followings. But, I didn't added meaning-logic based on the testcases. - aggregateToSQL - generateToSQL => This has only "SELECT 1" - groupingSetToSQL - projectToSQL - windowToSQL I think the test coverage enough due to it generates the above cases. If you suggests more testcases, I welcome. I like robustness both for this PR and for the future.
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