yaooqinn commented on a change in pull request #26847: [SPARK-30214][SQL]
Support COMMENT ON syntax
URL: https://github.com/apache/spark/pull/26847#discussion_r360359207
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/DataSourceV2Strategy.scala
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@@ -210,6 +212,16 @@ object DataSourceV2Strategy extends Strategy with
PredicateHelper {
case AlterNamespaceSetProperties(catalog, namespace, properties) =>
AlterNamespaceSetPropertiesExec(catalog, namespace, properties) :: Nil
+ case CommentOnNamespace(ResolvedNamespace(catalog, namespace), comment) =>
+ AlterNamespaceSetPropertiesExec(
+ catalog,
+ namespace,
+ Map(SupportsNamespaces.PROP_COMMENT -> comment)) :: Nil
Review comment:
we don't remove，we update the map with props_comment->empty string
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