cloud-fan commented on a change in pull request #28833:
URL: https://github.com/apache/spark/pull/28833#discussion_r612917435
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File path:
sql/core/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveSessionCatalog.scala
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@@ -268,6 +271,7 @@ class ResolveSessionCatalog(
// session catalog and the table provider is not v2.
case c @ CreateTableStatement(
SessionCatalogAndTable(catalog, tbl), _, _, _, _, _, _, _, _, _) =>
+ assertNoNullTypeInSchema(c.tableSchema)
Review comment:
I don't know any database that supports creating tables with null/void
type column, so this change is not for hive compatibility but for reasonable
SQL semantic.
I agree this is a breaking change that should be at least put in the
migration guide. A legacy config can also be added but I can't find a
reasonable use case for a null type column.
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