yaooqinn commented on a change in pull request #30586:
URL: https://github.com/apache/spark/pull/30586#discussion_r536072544
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File path:
sql/core/src/main/scala/org/apache/spark/sql/expressions/UserDefinedFunction.scala
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@@ -96,6 +97,8 @@ private[spark] case class SparkUserDefinedFunction(
nullable: Boolean = true,
deterministic: Boolean = true) extends UserDefinedFunction {
+ CharVarcharUtils.failIfHasCharVarchar(dataType)
Review comment:
Could this happen when one person defines the UDF but another guy tries
to register and use it?
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