Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/15987#discussion_r90797605
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -661,6 +661,36 @@ class Analyzer(
// rule: ResolveDeserializer.
case plan if containsDeserializer(plan.expressions) => plan
+ // Some commands (AlterTableDropPartitionCommand) use expressions,
so we need to resolve.
+ case c: CommandWithExpression =>
+ val catalogTable = catalog.getTableMetadata(c.getTableName)
+
+ // We should not do this here in order to support general
CommandWithExpression
+ if (catalogTable.tableType == CatalogTableType.VIEW) {
+ throw new AnalysisException(
+ "Cannot alter a view with ALTER TABLE. Please use ALTER VIEW
instead")
--- End diff --
Except `AlterTableDropPartitionCommand`, do we have other running commands
which need this resolving? If not, I think we may not need to add this to
`Analyzer` and create new abstraction `CommandWithExpression`.
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