[GitHub] [spark] wangyum commented on a change in pull request #25261: [SPARK-28521][SQL] Fix error message for built-in functions

[GitBox <gi...@apache.org>]

wangyum commented on a change in pull request #25261: [SPARK-28521][SQL] Fix error message for built-in functions
URL: https://github.com/apache/spark/pull/25261#discussion_r309500306
 
 

 ##########
 File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
 ##########
 @@ -588,14 +588,19 @@ object FunctionRegistry {
           val validParametersCount = constructors
             .filter(_.getParameterTypes.forall(_ == classOf[Expression]))
             .map(_.getParameterCount).distinct.sorted
-          val expectedNumberOfParameters = if (validParametersCount.length == 1) {
-            validParametersCount.head.toString
-          } else {
-            validParametersCount.init.mkString("one of ", ", ", " and ") +
-              validParametersCount.last
+          val expectedErrorMsg = validParametersCount.length match {
+            case 0 =>
+              ""
 
 Review comment:
   Done

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