cloud-fan commented on a change in pull request #28833:
URL: https://github.com/apache/spark/pull/28833#discussion_r448111176



##########
File path: 
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/rules.scala
##########
@@ -292,6 +293,8 @@ case class PreprocessTableCreation(sparkSession: 
SparkSession) extends Rule[Logi
       "in the table definition of " + table.identifier,
       sparkSession.sessionState.conf.caseSensitiveAnalysis)
 
+    assertNoNullTypeInSchema(schema)

Review comment:
       Is this needed? I think the changes in `ResolveCatalogs` and 
`ResolveSessionCatalog` should cover all the commands.

##########
File path: 
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveStrategies.scala
##########
@@ -106,7 +107,7 @@ class ResolveHiveSerdeTable(session: SparkSession) extends 
Rule[LogicalPlan] {
       } else {
         withStorage
       }
-
+      assertNoNullTypeInSchema(withSchema.schema)

Review comment:
       ditto




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