Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/1650#discussion_r15568205
--- Diff: sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveQl.scala ---
@@ -377,6 +378,10 @@ private[hive] object HiveQl {
}
protected def nodeToPlan(node: Node): LogicalPlan = node match {
+ // Special drop table that also uncaches.
+ case Token("TOK_DROPTABLE",
+ Token("TOK_TABNAME",
+ Token(tableName, Nil) :: Nil) :: Nil) => DropTable(tableName)
--- End diff --
Seems we also need to support refer to a table with the format of
`dbName.tableName` and `IF EXISTS`.
An example AST:
The AST tree of `drop table if exists default.src` is
```
TOK_DROPTABLE
TOK_TABNAME
default
src
TOK_IFEXISTS
```
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