cloud-fan commented on a change in pull request #24686: [SPARK-27813][SQL]
DataSourceV2: Add DropTable logical operation
URL: https://github.com/apache/spark/pull/24686#discussion_r289058174
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File path:
sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4
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@@ -139,8 +139,8 @@ statement
DROP (IF EXISTS)? partitionSpec (',' partitionSpec)*
#dropTablePartitions
| ALTER TABLE tableIdentifier partitionSpec? SET locationSpec
#setTableLocation
| ALTER TABLE tableIdentifier RECOVER PARTITIONS
#recoverPartitions
- | DROP TABLE (IF EXISTS)? tableIdentifier PURGE?
#dropTable
- | DROP VIEW (IF EXISTS)? tableIdentifier
#dropTable
+ | DROP TABLE (IF EXISTS)? multipartIdentifier PURGE?
#dropTable
+ | DROP VIEW (IF EXISTS)? multipartIdentifier
#dropView
Review comment:
Yes Hive mixes DROP TABLE and DROP VIEW, but it doesn't mean we have to
follow it in data source v2. At least this needs to be discussed.
It seems weird to me that we forward the DROP VIEW request to `TableCatalog`
implementations, without official view support in data source v2.
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