cloud-fan commented on a change in pull request #26053: [SPARK-29379][SQL]SHOW
FUNCTIONS show '!=', '<>' , 'between', 'case'
URL: https://github.com/apache/spark/pull/26053#discussion_r335327656
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/functions.scala
##########
@@ -73,6 +73,11 @@ case class CreateFunctionCommand(
s"is not allowed: '${databaseName.get}'")
}
+ // Redefine a virtual function is not allowed
+ if
(FunctionsCommand.virtualOperators.contains(functionName.toLowerCase(Locale.ROOT)))
{
+ throw new AnalysisException(s"It's not allowed to redefine virtual
function '$functionName'")
Review comment:
If we can't fix the problem completely here, let's keep it unchanged and fix
them all together later.
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