Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/14116#discussion_r71100937
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/SessionCatalog.scala
---
@@ -471,6 +480,34 @@ class SessionCatalog(
}
/**
+ * Normalize TableIdentifier by consistently ensuring the following two
rules.
+ * 1. System-side temporary tables should have None as database.
+ * 2. System-side temporary tables should have prefixed table names.
+ * Currently, only INFORMATION_SCHEMA tables are system-side temporary
tables, and this function
+ * returns TableIdentifier("information_schema.databases", None).
--- End diff --
Please correct this description.
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