[GitHub] spark pull request #22013: [SPARK-23939][SQL] Add transform_keys function

[codeatri]

Github user codeatri commented on a diff in the pull request:

    https://github.com/apache/spark/pull/22013#discussion_r208446666
  
    --- Diff: 
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/HigherOrderFunctionsSuite.scala
 ---
    @@ -181,4 +187,46 @@ class HigherOrderFunctionsSuite extends SparkFunSuite 
with ExpressionEvalHelper
             (acc, array) => coalesce(aggregate(array, acc, (acc, elem) => acc 
+ elem), acc)),
           15)
       }
    +
    +  test("TransformKeys") {
    +    val ai0 = Literal.create(
    +      Map(1 -> 1, 2 -> 2, 3 -> 3),
    --- End diff --
    
    Thanks for catching this!
    Included test cases, both here and in DataFrameFunctionsSuite.


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