Github user xwu0226 commented on a diff in the pull request:
https://github.com/apache/spark/pull/16626#discussion_r99681098
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/ddl.scala ---
@@ -814,4 +816,50 @@ object DDLUtils {
}
}
}
+
+ /**
+ * ALTER TABLE ADD COLUMNS command does not support temporary view/table,
+ * view, or datasource table with text, orc formats or external provider.
+ */
+ def verifyAlterTableAddColumn(
+ catalog: SessionCatalog,
+ table: TableIdentifier): CatalogTable = {
+ if (catalog.isTemporaryTable(table)) {
+ throw new AnalysisException(
+ s"${table.toString} is a temporary VIEW, which does not support
ALTER ADD COLUMNS.")
+ }
+
+ val catalogTable = catalog.getTableMetadata(table)
--- End diff --
I see. Will do. Thanks!
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