LantaoJin commented on a change in pull request #28833:
URL: https://github.com/apache/spark/pull/28833#discussion_r448156640
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveSessionCatalog.scala
##########
@@ -102,6 +105,7 @@ class ResolveSessionCatalog(
nameParts @ SessionCatalogAndTable(catalog, tbl), _, _, _, _, _) =>
loadTable(catalog, tbl.asIdentifier).collect {
case v1Table: V1Table =>
+ a.dataType.foreach(failNullType)
Review comment:
done
##########
File path: sql/catalyst/src/main/scala/org/apache/spark/sql/types/NullType.scala
##########
@@ -38,4 +38,12 @@ class NullType private() extends DataType {
* @since 1.3.0
*/
@Stable
-case object NullType extends NullType
+case object NullType extends NullType {
+
+ def containsNullType(dt: DataType): Boolean = dt match {
Review comment:
done
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveSessionCatalog.scala
##########
@@ -270,6 +275,7 @@ class ResolveSessionCatalog(
SessionCatalogAndTable(catalog, tbl), _, _, _, _, _, _, _, _, _) =>
val provider = c.provider.getOrElse(conf.defaultDataSourceName)
if (!isV2Provider(provider)) {
+ assertNoNullTypeInSchema(c.tableSchema)
Review comment:
done
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