cloud-fan commented on a change in pull request #25198: [SPARK-28443][SQL]
Spark sql add exception when create field type NullType
URL: https://github.com/apache/spark/pull/25198#discussion_r305712240
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/rules.scala
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@@ -393,6 +393,21 @@ case class PreprocessTableInsertion(conf: SQLConf)
extends Rule[LogicalPlan] {
}
}
+/**
+ * SPARK-28443: Spark sql add exception when create field type NullType
+ */
+object CreateTableCheck extends Rule[LogicalPlan] {
+ override def apply(plan: LogicalPlan): LogicalPlan = {
+ plan match {
+ case ct: CreateTable if ct.tableDesc.schema.exists { f =>
Review comment:
can we move it to the rule `PreWriteCheck`?
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