Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/13392#discussion_r65124192
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/internal/SQLConfSuite.scala ---
@@ -219,4 +220,41 @@ class SQLConfSuite extends QueryTest with
SharedSQLContext {
}
}
+ test("MAX_CASES_BRANCHES") {
+ import testImplicits._
+
+ val original = spark.conf.get(SQLConf.MAX_CASES_BRANCHES)
+ try {
+ withTable("tab1") {
+ spark
+ .range(10)
+ .select('id as 'a, 'id as 'b, 'id as 'c, 'id as 'd)
+ .write
+ .saveAsTable("tab1")
+
+ val sql_one_branch_caseWhen = "SELECT CASE WHEN a = 1 THEN 1 END
FROM tab1"
+ val sql_two_branch_caseWhen = "SELECT CASE WHEN a = 1 THEN 1 ELSE
0 END FROM tab1"
+
+ spark.conf.set(SQLConf.MAX_CASES_BRANCHES.key, "0")
--- End diff --
Yeah, will do it.
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