diff --git a/sql/core/src/test/scala/org/apache/spark/sql/DataFrameJoinSuite.scala b/sql/core/src/test/scala/org/apache/spark/sql/DataFrameJoinSuite.scala index e2716d7841d85..56ad71ea4f487 100644 --- a/sql/core/src/test/scala/org/apache/spark/sql/DataFrameJoinSuite.scala +++ b/sql/core/src/test/scala/org/apache/spark/sql/DataFrameJoinSuite.scala @@ -42,6 +42,19 @@ class DataFrameJoinSuite extends QueryTest with SharedSQLContext { Row(1, 2, "1", "2") :: Row(2, 3, "2", "3") :: Row(3, 4, "3", "4") :: Nil) } + test("join - join using multiple columns and specifying join type") { + val df = Seq(1, 2, 3).map(i => (i, i + 1, i.toString)).toDF("int", "int2", "str") + val df2 = Seq(1, 2, 3).map(i => (i, i + 1, (i + 1).toString)).toDF("int", "int2", "str") + + checkAnswer( + df.join(df2, Seq("int", "str"), "left"), + Row(1, 2, "1", null) :: Row(2, 3, "2", null) :: Row(3, 4, "3", null) :: Nil) + + checkAnswer( + df.join(df2, Seq("int", "str"), "right"), + Row(null, null, null, 2) :: Row(null, null, null, 3) :: Row(null, null, null, 4) :: Nil) + } + test("join - join using self join") { val df = Seq(1, 2, 3).map(i => (i, i.toString)).toDF("int", "str")