gatorsmile commented on a change in pull request #27550: [SPARK-30799][SQL]
"spark_catalog.t" should not be resolved to temp view
URL: https://github.com/apache/spark/pull/27550#discussion_r380868610
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/connector/catalog/LookupCatalog.scala
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@@ -94,6 +94,10 @@ private[sql] trait LookupCatalog extends Logging {
* Extract catalog and identifier from a multi-part name with the current
catalog if needed.
* Catalog name takes precedence over identifier, but for a single-part
name, identifier takes
* precedence over catalog name.
+ *
+ * Note that, this pattern is used to look up permanent catalog objects like
table, view,
+ * function, etc. If you need to look up temp objects like temp view, please
do it separately
+ * before calling this pattern, as temp objects don't belong to any catalog.
Review comment:
The term `Catalog` is being used in many places. For example, our internal
SessionCatalog also manages temp objects.
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