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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