Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/14897#discussion_r80280674
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/SessionCatalog.scala
---
@@ -453,7 +532,11 @@ class SessionCatalog(
val db = formatDatabaseName(name.database.getOrElse(currentDb))
val table = formatTableName(name.table)
val relationAlias = alias.getOrElse(table)
- if (name.database.isDefined || !tempTables.contains(table)) {
+ if (db == globalTempDB) {
+ globalTempViews.get(table).map { viewDef =>
+ SubqueryAlias(relationAlias, viewDef, Some(name))
+ }.getOrElse(throw new NoSuchTableException(db, table))
+ } else if (name.database.isDefined || !tempTables.contains(table)) {
--- End diff --
We should probably update the ScalaDoc to mention the lookup order.
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