Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/14897#discussion_r82299965
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/SessionCatalog.scala
---
@@ -188,6 +196,11 @@ class SessionCatalog(
def setCurrentDatabase(db: String): Unit = {
val dbName = formatDatabaseName(db)
+ if (dbName == globalTempViewManager.database) {
+ throw new AnalysisException(
+ s"${globalTempViewManager.database} is a system preserved
database, " +
+ "you cannot use it as current database.")
--- End diff --
Seems it will be useful to let users know how to access temp views under
this namespace.
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