viirya commented on issue #27090: [SPARK-27545][SQL] Temporary view is not removed while uncaching the table URL: https://github.com/apache/spark/pull/27090#issuecomment-570761486 > maybe we should clearly document that `CACHE TABLE t1 as SELECT * FROM some_table;` means create a temp view and cache it. cc @viirya @dongjoon-hyun As shown above, `UNCACHE TABLE t` where `t` could be created by `CACHE TABLE AS query` or a temp view created separately. I think it is hard to make `UNCACHE TABLE` command know which one is its target. Although `UNCACHE TABLE` cannot remove temp view if it is created by `CACHE TABLE AS query`, it seems not a serious issue. When trying to create another temp view with the same name, an error will be seen. Documenting it is a good idea.
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